migi-fastclick - npm Package Compare versions

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1.0.10

1.1.0

.idea/markdown-navigator.xml

.idea/markdown-navigator/profiles_settings.xml

1358

lib/fastclick.js

		@@ -15,672 +15,700 @@ ;(function () {

		var userAgent = typeof window != 'undefined' ? navigator.userAgent : '';

		/**
		* Instantiate fast-clicking listeners on the specified layer.
		*
		* @constructor
		* @param {Element} layer The layer to listen on
		* @param {Object} [options={}] The options to override the defaults
		*/
		function FastClick(layer, options) {
		var oldOnClick;
		/**
		* Instantiate fast-clicking listeners on the specified layer.
		*
		* @constructor
		* @param {Element} layer The layer to listen on
		* @param {Object} [options={}] The options to override the defaults
		*/
		function FastClick(layer, options) {
		var oldOnClick;

		options = options \|\| {};
		options = options \|\| {};

		/**
		* Whether a click is currently being tracked.
		*
		* @type boolean
		*/
		this.trackingClick = false;
		/**
		* Whether a click is currently being tracked.
		*
		* @type boolean
		*/
		this.trackingClick = false;


		/**
		* Timestamp for when click tracking started.
		*
		* @type number
		*/
		this.trackingClickStart = 0;
		/**
		* Timestamp for when click tracking started.
		*
		* @type number
		*/
		this.trackingClickStart = 0;


		/**
		* The element being tracked for a click.
		*
		* @type EventTarget
		*/
		this.targetElement = null;
		/**
		* The element being tracked for a click.
		*
		* @type EventTarget
		*/
		this.targetElement = null;


		/**
		* X-coordinate of touch start event.
		*
		* @type number
		*/
		this.touchStartX = 0;
		/**
		* X-coordinate of touch start event.
		*
		* @type number
		*/
		this.touchStartX = 0;


		/**
		* Y-coordinate of touch start event.
		*
		* @type number
		*/
		this.touchStartY = 0;
		/**
		* Y-coordinate of touch start event.
		*
		* @type number
		*/
		this.touchStartY = 0;


		/**
		* ID of the last touch, retrieved from Touch.identifier.
		*
		* @type number
		*/
		this.lastTouchIdentifier = 0;
		/**
		* ID of the last touch, retrieved from Touch.identifier.
		*
		* @type number
		*/
		this.lastTouchIdentifier = 0;


		/**
		* Touchmove boundary, beyond which a click will be cancelled.
		*
		* @type number
		*/
		this.touchBoundary = options.touchBoundary \|\| 10;
		/**
		* Touchmove boundary, beyond which a click will be cancelled.
		*
		* @type number
		*/
		this.touchBoundary = options.touchBoundary \|\| 10;


		/**
		* The FastClick layer.
		*
		* @type Element
		*/
		this.layer = layer;
		/**
		* The FastClick layer.
		*
		* @type Element
		*/
		this.layer = layer;

		/**
		* The minimum time between tap(touchstart and touchend) events
		*
		* @type number
		*/
		this.tapDelay = options.tapDelay \|\| 200;
		/**
		* The minimum time between tap(touchstart and touchend) events
		*
		* @type number
		*/
		this.tapDelay = options.tapDelay \|\| 200;

		/**
		* The maximum time for a tap
		*
		* @type number
		*/
		this.tapTimeout = options.tapTimeout \|\| 700;
		/**
		* The maximum time for a tap
		*
		* @type number
		*/
		this.tapTimeout = options.tapTimeout \|\| 700;

		if (FastClick.notNeeded(layer)) {
		return;
		}
		if (FastClick.notNeeded(layer)) {
		return;
		}

		// Some old versions of Android don't have Function.prototype.bind
		function bind(method, context) {
		return function() { return method.apply(context, arguments); };
		}
		// Some old versions of Android don't have Function.prototype.bind
		function bind(method, context) {
		return function() { return method.apply(context, arguments); };
		}


		var methods = ['onMouse', 'onClick', 'onTouchStart', 'onTouchMove', 'onTouchEnd', 'onTouchCancel'];
		var context = this;
		for (var i = 0, l = methods.length; i < l; i++) {
		context[methods[i]] = bind(context[methods[i]], context);
		}
		var methods = ['onMouse', 'onClick', 'onTouchStart', 'onTouchMove', 'onTouchEnd', 'onTouchCancel'];
		var context = this;
		for (var i = 0, l = methods.length; i < l; i++) {
		context[methods[i]] = bind(context[methods[i]], context);
		}

		// Set up event handlers as required
		if (deviceIsAndroid) {
		layer.addEventListener('mouseover', this.onMouse, true);
		layer.addEventListener('mousedown', this.onMouse, true);
		layer.addEventListener('mouseup', this.onMouse, true);
		}
		// Set up event handlers as required
		if (deviceIsAndroid) {
		layer.addEventListener('mouseover', this.onMouse, true);
		layer.addEventListener('mousedown', this.onMouse, true);
		layer.addEventListener('mouseup', this.onMouse, true);
		}

		layer.addEventListener('click', this.onClick, true);
		layer.addEventListener('touchstart', this.onTouchStart, false);
		layer.addEventListener('touchmove', this.onTouchMove, false);
		layer.addEventListener('touchend', this.onTouchEnd, false);
		layer.addEventListener('touchcancel', this.onTouchCancel, false);
		layer.addEventListener('click', this.onClick, true);
		layer.addEventListener('touchstart', this.onTouchStart, false);
		layer.addEventListener('touchmove', this.onTouchMove, false);
		layer.addEventListener('touchend', this.onTouchEnd, false);
		layer.addEventListener('touchcancel', this.onTouchCancel, false);

		// Hack is required for browsers that don't support Event#stopImmediatePropagation (e.g. Android 2)
		// which is how FastClick normally stops click events bubbling to callbacks registered on the FastClick
		// layer when they are cancelled.
		if (!Event.prototype.stopImmediatePropagation) {
		layer.removeEventListener = function(type, callback, capture) {
		var rmv = Node.prototype.removeEventListener;
		if (type === 'click') {
		rmv.call(layer, type, callback.hijacked \|\| callback, capture);
		} else {
		rmv.call(layer, type, callback, capture);
		}
		};
		// Hack is required for browsers that don't support Event#stopImmediatePropagation (e.g. Android 2)
		// which is how FastClick normally stops click events bubbling to callbacks registered on the FastClick
		// layer when they are cancelled.
		if (!Event.prototype.stopImmediatePropagation) {
		layer.removeEventListener = function(type, callback, capture) {
		var rmv = Node.prototype.removeEventListener;
		if (type === 'click') {
		rmv.call(layer, type, callback.hijacked \|\| callback, capture);
		} else {
		rmv.call(layer, type, callback, capture);
		}
		};

		layer.addEventListener = function(type, callback, capture) {
		var adv = Node.prototype.addEventListener;
		if (type === 'click') {
		adv.call(layer, type, callback.hijacked \|\| (callback.hijacked = function(event) {
		if (!event.propagationStopped) {
		callback(event);
		}
		}), capture);
		} else {
		adv.call(layer, type, callback, capture);
		}
		};
		}
		layer.addEventListener = function(type, callback, capture) {
		var adv = Node.prototype.addEventListener;
		if (type === 'click') {
		adv.call(layer, type, callback.hijacked \|\| (callback.hijacked = function(event) {
		if (!event.propagationStopped) {
		callback(event);
		}
		}), capture);
		} else {
		adv.call(layer, type, callback, capture);
		}
		};
		}

		// If a handler is already declared in the element's onclick attribute, it will be fired before
		// FastClick's onClick handler. Fix this by pulling out the user-defined handler function and
		// adding it as listener.
		if (typeof layer.onclick === 'function') {
		// If a handler is already declared in the element's onclick attribute, it will be fired before
		// FastClick's onClick handler. Fix this by pulling out the user-defined handler function and
		// adding it as listener.
		if (typeof layer.onclick === 'function') {

		// Android browser on at least 3.2 requires a new reference to the function in layer.onclick
		// - the old one won't work if passed to addEventListener directly.
		oldOnClick = layer.onclick;
		layer.addEventListener('click', function(event) {
		oldOnClick(event);
		}, false);
		layer.onclick = null;
		}
		}
		// Android browser on at least 3.2 requires a new reference to the function in layer.onclick
		// - the old one won't work if passed to addEventListener directly.
		oldOnClick = layer.onclick;
		layer.addEventListener('click', function(event) {
		oldOnClick(event);
		}, false);
		layer.onclick = null;
		}
		}

		/**
		* Windows Phone 8.1 fakes user agent string to look like Android and iPhone.
		*
		* @type boolean
		*/
		var deviceIsWindowsPhone = navigator.userAgent.indexOf("Windows Phone") >= 0;
		/**
		* Windows Phone 8.1 fakes user agent string to look like Android and iPhone.
		*
		* @type boolean
		*/
		var deviceIsWindowsPhone = userAgent.indexOf("Windows Phone") >= 0;

		/**
		* Android requires exceptions.
		*
		* @type boolean
		*/
		var deviceIsAndroid = navigator.userAgent.indexOf('Android') > 0 && !deviceIsWindowsPhone;
		/**
		* Android requires exceptions.
		*
		* @type boolean
		*/
		var deviceIsAndroid = userAgent.indexOf('Android') > 0 && !deviceIsWindowsPhone;


		/**
		* iOS requires exceptions.
		*
		* @type boolean
		*/
		var deviceIsIOS = /iP(ad\|hone\|od)/.test(navigator.userAgent) && !deviceIsWindowsPhone;
		/**
		* iOS requires exceptions.
		*
		* @type boolean
		*/
		var deviceIsIOS = /iP(ad\|hone\|od)/.test(userAgent) && !deviceIsWindowsPhone;


		/**
		* iOS 4 requires an exception for select elements.
		*
		* @type boolean
		*/
		var deviceIsIOS4 = deviceIsIOS && (/OS 4_\d(_\d)?/).test(navigator.userAgent);
		/**
		* iOS 4 requires an exception for select elements.
		*
		* @type boolean
		*/
		var deviceIsIOS4 = deviceIsIOS && (/OS 4_\d(_\d)?/).test(userAgent);


		/**
		* iOS 6.0-7.* requires the target element to be manually derived
		*
		* @type boolean
		*/
		var deviceIsIOSWithBadTarget = deviceIsIOS && (/OS [6-7]_\d/).test(navigator.userAgent);
		/**
		* iOS 6.0-7.* requires the target element to be manually derived
		*
		* @type boolean
		*/
		var deviceIsIOSWithBadTarget = deviceIsIOS && (/OS [6-7]_\d/).test(userAgent);

		/**
		* BlackBerry requires exceptions.
		*
		* @type boolean
		*/
		var deviceIsBlackBerry10 = navigator.userAgent.indexOf('BB10') > 0;
		/**
		* BlackBerry requires exceptions.
		*
		* @type boolean
		*/
		var deviceIsBlackBerry10 = userAgent.indexOf('BB10') > 0;

		/**
		* Determine whether a given element requires a native click.
		*
		* @param {EventTarget\|Element} target Target DOM element
		* @returns {boolean} Returns true if the element needs a native click
		*/
		FastClick.prototype.needsClick = function(target) {
		switch (target.nodeName.toLowerCase()) {
		/**
		* Determine whether a given element requires a native click.
		*
		* @param {EventTarget\|Element} target Target DOM element
		* @returns {boolean} Returns true if the element needs a native click
		*/
		FastClick.prototype.needsClick = function(target) {
		switch (target.nodeName.toLowerCase()) {

		// Don't send a synthetic click to disabled inputs (issue #62)
		case 'button':
		case 'select':
		case 'textarea':
		if (target.disabled) {
		return true;
		}
		// Don't send a synthetic click to disabled inputs (issue #62)
		case 'button':
		case 'select':
		case 'textarea':
		if (target.disabled) {
		return true;
		}

		break;
		case 'input':
		break;
		case 'input':

		// File inputs need real clicks on iOS 6 due to a browser bug (issue #68)
		if ((deviceIsIOS && target.type === 'file') \|\| target.disabled) {
		return true;
		}
		// File inputs need real clicks on iOS 6 due to a browser bug (issue #68)
		if ((deviceIsIOS && target.type === 'file') \|\| target.disabled) {
		return true;
		}

		break;
		case 'label':
		case 'iframe': // iOS8 homescreen apps can prevent events bubbling into frames
		case 'video':
		return true;
		}
		break;
		case 'label':
		case 'iframe': // iOS8 homescreen apps can prevent events bubbling into frames
		case 'video':
		return true;
		}

		return (/\bneedsclick\b/).test(target.className);
		};
		return (/\bneedsclick\b/).test(target.className) \|\| (/\bneedsclick\b/).test(target.getAttribute('migi-class'));
		};


		/**
		* Determine whether a given element requires a call to focus to simulate click into element.
		*
		* @param {EventTarget\|Element} target Target DOM element
		* @returns {boolean} Returns true if the element requires a call to focus to simulate native click.
		*/
		FastClick.prototype.needsFocus = function(target) {
		switch (target.nodeName.toLowerCase()) {
		case 'textarea':
		return true;
		case 'select':
		return !deviceIsAndroid;
		case 'input':
		switch (target.type) {
		case 'button':
		case 'checkbox':
		case 'file':
		case 'image':
		case 'radio':
		case 'submit':
		return false;
		}
		/**
		* Determine whether a given element requires a call to focus to simulate click into element.
		*
		* @param {EventTarget\|Element} target Target DOM element
		* @returns {boolean} Returns true if the element requires a call to focus to simulate native click.
		*/
		FastClick.prototype.needsFocus = function(target) {
		switch (target.nodeName.toLowerCase()) {
		case 'textarea':
		return true;
		case 'select':
		return !deviceIsAndroid;
		case 'input':
		switch (target.type) {
		case 'button':
		case 'checkbox':
		case 'file':
		case 'image':
		case 'radio':
		case 'submit':
		return false;
		}

		// No point in attempting to focus disabled inputs
		return !target.disabled && !target.readOnly;
		default:
		return (/\bneedsfocus\b/).test(target.className);
		}
		};
		// No point in attempting to focus disabled inputs
		return !target.disabled && !target.readOnly;
		default:
		return (/\bneedsfocus\b/).test(target.className);
		}
		};


		/**
		* Send a click event to the specified element.
		*
		* @param {EventTarget\|Element} targetElement
		* @param {Event} event
		*/
		FastClick.prototype.sendClick = function(targetElement, event) {
		var clickEvent, touch;
		/**
		* Send a click event to the specified element.
		*
		* @param {EventTarget\|Element} targetElement
		* @param {Event} event
		*/
		FastClick.prototype.sendClick = function(targetElement, event) {
		var clickEvent, touch;

		// On some Android devices activeElement needs to be blurred otherwise the synthetic click will have no effect (#24)
		if (deviceIsAndroid && document.activeElement && document.activeElement !== targetElement) {
		document.activeElement.blur();
		}
		// On some Android devices activeElement needs to be blurred otherwise the synthetic click will have no effect (#24)
		if (deviceIsAndroid && document.activeElement && document.activeElement !== targetElement) {
		document.activeElement.blur();
		}

		touch = event.changedTouches[0];
		touch = event.changedTouches[0];

		// Synthesise a click event, with an extra attribute so it can be tracked
		clickEvent = document.createEvent('MouseEvents');
		clickEvent.initMouseEvent(this.determineEventType(targetElement), true, true, window, 1, touch.screenX, touch.screenY, touch.clientX, touch.clientY, false, false, false, false, 0, null);
		clickEvent.forwardedTouchEvent = true;
		targetElement.dispatchEvent(clickEvent);
		};
		// Synthesise a click event, with an extra attribute so it can be tracked
		clickEvent = document.createEvent('MouseEvents');
		clickEvent.initMouseEvent(this.determineEventType(targetElement), true, true, window, 1, touch.screenX, touch.screenY, touch.clientX, touch.clientY, false, false, false, false, 0, null);
		clickEvent.forwardedTouchEvent = true;
		targetElement.dispatchEvent(clickEvent);
		};

		FastClick.prototype.determineEventType = function(targetElement) {
		FastClick.prototype.determineEventType = function(targetElement) {

		//Issue #159: Android Chrome Select Box does not open with a synthetic click event
		if (deviceIsAndroid && targetElement.tagName.toLowerCase() === 'select') {
		return 'mousedown';
		}
		//Issue #159: Android Chrome Select Box does not open with a synthetic click event
		if (deviceIsAndroid && targetElement.tagName.toLowerCase() === 'select') {
		return 'mousedown';
		}

		return 'click';
		};
		return 'click';
		};


		/**
		* @param {EventTarget\|Element} targetElement
		*/
		FastClick.prototype.focus = function(targetElement) {
		var length;
		/**
		* @param {EventTarget\|Element} targetElement
		*/
		FastClick.prototype.focus = function(targetElement) {
		var length;

		// Issue #160: on iOS 7, some input elements (e.g. date datetime month) throw a vague TypeError on setSelectionRange. These elements don't have an integer value for the selectionStart and selectionEnd properties, but unfortunately that can't be used for detection because accessing the properties also throws a TypeError. Just check the type instead. Filed as Apple bug #15122724.
		if (deviceIsIOS && targetElement.setSelectionRange && targetElement.type.indexOf('date') !== 0 && targetElement.type !== 'time' && targetElement.type !== 'month' && targetElement.type !== 'number' && targetElement.type !== 'email' && targetElement.type !== 'range') {
		length = targetElement.value.length;
		targetElement.setSelectionRange(length, length);
		} else {
		targetElement.focus();
		}
		};
		// Issue #160: on iOS 7, some input elements (e.g. date datetime month) throw a vague TypeError on setSelectionRange. These elements don't have an integer value for the selectionStart and selectionEnd properties, but unfortunately that can't be used for detection because accessing the properties also throws a TypeError. Just check the type instead. Filed as Apple bug #15122724.
		if (deviceIsIOS && targetElement.setSelectionRange && targetElement.type.indexOf('date') !== 0 && targetElement.type !== 'time' && targetElement.type !== 'month' && targetElement.type !== 'number' && targetElement.type !== 'email' && targetElement.type !== 'range') {
		length = targetElement.value.length;
		targetElement.setSelectionRange(length, length);

		// Calling focus() here fixes this:
		// https://github.com/ftlabs/fastclick/issues/548
		//
		// No idea why this works, but calling focus() fixes at least this scenario:
		// - iOS 11.3
		// - Cordova with UIWebView
		// - Open page with datetime input and text input
		// - Tap datetime input, close the popup
		// - Quickly tap text input
		// -> Nothing happens (this is fixed by calling focus())
		// - Tap text input for a longer time
		// -> Text input is focused
		targetElement.focus();

		/**
		* Check whether the given target element is a child of a scrollable layer and if so, set a flag on it.
		*
		* @param {EventTarget\|Element} targetElement
		*/
		FastClick.prototype.updateScrollParent = function(targetElement) {
		var scrollParent, parentElement;
		} else {
		targetElement.focus();
		}
		};

		scrollParent = targetElement.fastClickScrollParent;

		// Attempt to discover whether the target element is contained within a scrollable layer. Re-check if the
		// target element was moved to another parent.
		if (!scrollParent \|\| !scrollParent.contains(targetElement)) {
		parentElement = targetElement;
		do {
		if (parentElement.scrollHeight > parentElement.offsetHeight) {
		scrollParent = parentElement;
		targetElement.fastClickScrollParent = parentElement;
		break;
		}
		/**
		* Check whether the given target element is a child of a scrollable layer and if so, set a flag on it.
		*
		* @param {EventTarget\|Element} targetElement
		*/
		FastClick.prototype.updateScrollParent = function(targetElement) {
		var scrollParent, parentElement;

		parentElement = parentElement.parentElement;
		} while (parentElement);
		}
		scrollParent = targetElement.fastClickScrollParent;

		// Always update the scroll top tracker if possible.
		if (scrollParent) {
		scrollParent.fastClickLastScrollTop = scrollParent.scrollTop;
		}
		};
		// Attempt to discover whether the target element is contained within a scrollable layer. Re-check if the
		// target element was moved to another parent.
		if (!scrollParent \|\| !scrollParent.contains(targetElement)) {
		parentElement = targetElement;
		do {
		if (parentElement.scrollHeight > parentElement.offsetHeight) {
		scrollParent = parentElement;
		targetElement.fastClickScrollParent = parentElement;
		break;
		}

		parentElement = parentElement.parentElement;
		} while (parentElement);
		}

		/**
		* @param {EventTarget} targetElement
		* @returns {Element\|EventTarget}
		*/
		FastClick.prototype.getTargetElementFromEventTarget = function(eventTarget) {
		// Always update the scroll top tracker if possible.
		if (scrollParent) {
		scrollParent.fastClickLastScrollTop = scrollParent.scrollTop;
		}
		};

		// On some older browsers (notably Safari on iOS 4.1 - see issue #56) the event target may be a text node.
		if (eventTarget.nodeType === Node.TEXT_NODE) {
		return eventTarget.parentNode;
		}

		return eventTarget;
		};
		/**
		* @param {EventTarget} targetElement
		* @returns {Element\|EventTarget}
		*/
		FastClick.prototype.getTargetElementFromEventTarget = function(eventTarget) {

		// On some older browsers (notably Safari on iOS 4.1 - see issue #56) the event target may be a text node.
		if (eventTarget.nodeType === Node.TEXT_NODE) {
		return eventTarget.parentNode;
		}

		/**
		* On touch start, record the position and scroll offset.
		*
		* @param {Event} event
		* @returns {boolean}
		*/
		FastClick.prototype.onTouchStart = function(event) {
		var targetElement, touch, selection;
		return eventTarget;
		};

		// Ignore multiple touches, otherwise pinch-to-zoom is prevented if both fingers are on the FastClick element (issue #111).
		if (event.targetTouches.length > 1) {
		return true;
		}

		targetElement = this.getTargetElementFromEventTarget(event.target);
		touch = event.targetTouches[0];
		/**
		* On touch start, record the position and scroll offset.
		*
		* @param {Event} event
		* @returns {boolean}
		*/
		FastClick.prototype.onTouchStart = function(event) {
		var targetElement, touch, selection, touchStartTime;

		if (deviceIsIOS) {
		// Ignore multiple touches, otherwise pinch-to-zoom is prevented if both fingers are on the FastClick element (issue #111).
		if (event.targetTouches.length > 1) {
		return true;
		}

		// Only trusted events will deselect text on iOS (issue #49)
		selection = window.getSelection();
		if (selection.rangeCount && !selection.isCollapsed) {
		return true;
		}
		// iOS (at least 11.4 and 11.4 beta) can return smaller event.timeStamp values after resuming with
		// Cordova using UIWebView (and possibly also with mobile Safari?), the timeStamp values can also
		// be negative
		// https://github.com/ftlabs/fastclick/issues/549
		touchStartTime = (new Date()).getTime();

		if (!deviceIsIOS4) {
		targetElement = this.getTargetElementFromEventTarget(event.target);
		touch = event.targetTouches[0];

		// Weird things happen on iOS when an alert or confirm dialog is opened from a click event callback (issue #23):
		// when the user next taps anywhere else on the page, new touchstart and touchend events are dispatched
		// with the same identifier as the touch event that previously triggered the click that triggered the alert.
		// Sadly, there is an issue on iOS 4 that causes some normal touch events to have the same identifier as an
		// immediately preceeding touch event (issue #52), so this fix is unavailable on that platform.
		// Issue 120: touch.identifier is 0 when Chrome dev tools 'Emulate touch events' is set with an iOS device UA string,
		// which causes all touch events to be ignored. As this block only applies to iOS, and iOS identifiers are always long,
		// random integers, it's safe to to continue if the identifier is 0 here.
		if (touch.identifier && touch.identifier === this.lastTouchIdentifier) {
		event.preventDefault();
		return false;
		}
		if (deviceIsIOS) {

		this.lastTouchIdentifier = touch.identifier;
		// Only trusted events will deselect text on iOS (issue #49)
		selection = window.getSelection();
		if (selection.rangeCount && !selection.isCollapsed) {
		return true;
		}

		// If the target element is a child of a scrollable layer (using -webkit-overflow-scrolling: touch) and:
		// 1) the user does a fling scroll on the scrollable layer
		// 2) the user stops the fling scroll with another tap
		// then the event.target of the last 'touchend' event will be the element that was under the user's finger
		// when the fling scroll was started, causing FastClick to send a click event to that layer - unless a check
		// is made to ensure that a parent layer was not scrolled before sending a synthetic click (issue #42).
		this.updateScrollParent(targetElement);
		}
		}
		if (!deviceIsIOS4) {

		this.trackingClick = true;
		this.trackingClickStart = event.timeStamp;
		this.targetElement = targetElement;
		// Weird things happen on iOS when an alert or confirm dialog is opened from a click event callback (issue #23):
		// when the user next taps anywhere else on the page, new touchstart and touchend events are dispatched
		// with the same identifier as the touch event that previously triggered the click that triggered the alert.
		// Sadly, there is an issue on iOS 4 that causes some normal touch events to have the same identifier as an
		// immediately preceeding touch event (issue #52), so this fix is unavailable on that platform.
		// Issue 120: touch.identifier is 0 when Chrome dev tools 'Emulate touch events' is set with an iOS device UA string,
		// which causes all touch events to be ignored. As this block only applies to iOS, and iOS identifiers are always long,
		// random integers, it's safe to to continue if the identifier is 0 here.
		if (touch.identifier && touch.identifier === this.lastTouchIdentifier) {
		event.preventDefault();
		return false;
		}

		this.touchStartX = touch.pageX;
		this.touchStartY = touch.pageY;
		this.lastTouchIdentifier = touch.identifier;

		// Prevent phantom clicks on fast double-tap (issue #36)
		if ((event.timeStamp - this.lastClickTime) < this.tapDelay) {
		event.preventDefault();
		}
		// If the target element is a child of a scrollable layer (using -webkit-overflow-scrolling: touch) and:
		// 1) the user does a fling scroll on the scrollable layer
		// 2) the user stops the fling scroll with another tap
		// then the event.target of the last 'touchend' event will be the element that was under the user's finger
		// when the fling scroll was started, causing FastClick to send a click event to that layer - unless a check
		// is made to ensure that a parent layer was not scrolled before sending a synthetic click (issue #42).
		this.updateScrollParent(targetElement);
		}
		}

		return true;
		};
		this.trackingClick = true;
		this.trackingClickStart = touchStartTime;
		this.targetElement = targetElement;

		this.touchStartX = touch.pageX;
		this.touchStartY = touch.pageY;

		/**
		* Based on a touchmove event object, check whether the touch has moved past a boundary since it started.
		*
		* @param {Event} event
		* @returns {boolean}
		*/
		FastClick.prototype.touchHasMoved = function(event) {
		var touch = event.changedTouches[0], boundary = this.touchBoundary;
		// Prevent phantom clicks on fast double-tap (issue #36)
		if ((touchStartTime - this.lastClickTime) < this.tapDelay) {
		event.preventDefault();
		}

		if (Math.abs(touch.pageX - this.touchStartX) > boundary \|\| Math.abs(touch.pageY - this.touchStartY) > boundary) {
		return true;
		}
		return true;
		};

		return false;
		};

		/**
		* Based on a touchmove event object, check whether the touch has moved past a boundary since it started.
		*
		* @param {Event} event
		* @returns {boolean}
		*/
		FastClick.prototype.touchHasMoved = function(event) {
		var touch = event.changedTouches[0], boundary = this.touchBoundary;

		/**
		* Update the last position.
		*
		* @param {Event} event
		* @returns {boolean}
		*/
		FastClick.prototype.onTouchMove = function(event) {
		if (!this.trackingClick) {
		return true;
		}
		if (Math.abs(touch.pageX - this.touchStartX) > boundary \|\| Math.abs(touch.pageY - this.touchStartY) > boundary) {
		return true;
		}

		// If the touch has moved, cancel the click tracking
		if (this.targetElement !== this.getTargetElementFromEventTarget(event.target) \|\| this.touchHasMoved(event)) {
		this.trackingClick = false;
		this.targetElement = null;
		}
		return false;
		};

		return true;
		};

		/**
		* Update the last position.
		*
		* @param {Event} event
		* @returns {boolean}
		*/
		FastClick.prototype.onTouchMove = function(event) {
		if (!this.trackingClick) {
		return true;
		}

		/**
		* Attempt to find the labelled control for the given label element.
		*
		* @param {EventTarget\|HTMLLabelElement} labelElement
		* @returns {Element\|null}
		*/
		FastClick.prototype.findControl = function(labelElement) {
		// If the touch has moved, cancel the click tracking
		if (this.targetElement !== this.getTargetElementFromEventTarget(event.target) \|\| this.touchHasMoved(event)) {
		this.trackingClick = false;
		this.targetElement = null;
		}

		// Fast path for newer browsers supporting the HTML5 control attribute
		if (labelElement.control !== undefined) {
		return labelElement.control;
		}
		return true;
		};

		// All browsers under test that support touch events also support the HTML5 htmlFor attribute
		if (labelElement.htmlFor) {
		return document.getElementById(labelElement.htmlFor);
		}

		// If no for attribute exists, attempt to retrieve the first labellable descendant element
		// the list of which is defined here: http://www.w3.org/TR/html5/forms.html#category-label
		return labelElement.querySelector('button, input:not([type=hidden]), keygen, meter, output, progress, select, textarea');
		};
		/**
		* Attempt to find the labelled control for the given label element.
		*
		* @param {EventTarget\|HTMLLabelElement} labelElement
		* @returns {Element\|null}
		*/
		FastClick.prototype.findControl = function(labelElement) {

		// Fast path for newer browsers supporting the HTML5 control attribute
		if (labelElement.control !== undefined) {
		return labelElement.control;
		}

		/**
		* On touch end, determine whether to send a click event at once.
		*
		* @param {Event} event
		* @returns {boolean}
		*/
		FastClick.prototype.onTouchEnd = function(event) {
		var forElement, trackingClickStart, targetTagName, scrollParent, touch, targetElement = this.targetElement;
		// All browsers under test that support touch events also support the HTML5 htmlFor attribute
		if (labelElement.htmlFor) {
		return document.getElementById(labelElement.htmlFor);
		}

		if (!this.trackingClick) {
		return true;
		}
		// If no for attribute exists, attempt to retrieve the first labellable descendant element
		// the list of which is defined here: http://www.w3.org/TR/html5/forms.html#category-label
		return labelElement.querySelector('button, input:not([type=hidden]), keygen, meter, output, progress, select, textarea');
		};

		// Prevent phantom clicks on fast double-tap (issue #36)
		if ((event.timeStamp - this.lastClickTime) < this.tapDelay) {
		this.cancelNextClick = true;
		return true;
		}

		if ((event.timeStamp - this.trackingClickStart) > this.tapTimeout) {
		return true;
		}
		/**
		* On touch end, determine whether to send a click event at once.
		*
		* @param {Event} event
		* @returns {boolean}
		*/
		FastClick.prototype.onTouchEnd = function(event) {
		var forElement, trackingClickStart, targetTagName, scrollParent, touch, touchEndTime, targetElement = this.targetElement;

		// Reset to prevent wrong click cancel on input (issue #156).
		this.cancelNextClick = false;
		if (!this.trackingClick) {
		return true;
		}

		this.lastClickTime = event.timeStamp;
		// iOS (at least 11.4 and 11.4 beta) can return smaller event.timeStamp values after resuming with
		// Cordova using UIWebView (and possibly also with mobile Safari?), the timeStamp values can also
		// be negative
		// https://github.com/ftlabs/fastclick/issues/549
		touchEndTime = (new Date()).getTime();

		trackingClickStart = this.trackingClickStart;
		this.trackingClick = false;
		this.trackingClickStart = 0;
		// Prevent phantom clicks on fast double-tap (issue #36)
		if ((touchEndTime - this.lastClickTime) < this.tapDelay) {
		this.cancelNextClick = true;
		return true;
		}

		// On some iOS devices, the targetElement supplied with the event is invalid if the layer
		// is performing a transition or scroll, and has to be re-detected manually. Note that
		// for this to function correctly, it must be called after the event target is checked!
		// See issue #57; also filed as rdar://13048589 .
		if (deviceIsIOSWithBadTarget) {
		touch = event.changedTouches[0];
		if ((touchEndTime - this.trackingClickStart) > this.tapTimeout) {
		return true;
		}

		// In certain cases arguments of elementFromPoint can be negative, so prevent setting targetElement to null
		targetElement = document.elementFromPoint(touch.pageX - window.pageXOffset, touch.pageY - window.pageYOffset) \|\| targetElement;
		targetElement.fastClickScrollParent = this.targetElement.fastClickScrollParent;
		}
		// Reset to prevent wrong click cancel on input (issue #156).
		this.cancelNextClick = false;

		targetTagName = targetElement.tagName.toLowerCase();
		if (targetTagName === 'label') {
		forElement = this.findControl(targetElement);
		if (forElement) {
		this.focus(targetElement);
		if (deviceIsAndroid) {
		return false;
		}
		this.lastClickTime = touchEndTime;

		targetElement = forElement;
		}
		} else if (this.needsFocus(targetElement)) {
		trackingClickStart = this.trackingClickStart;
		this.trackingClick = false;
		this.trackingClickStart = 0;

		// Case 1: If the touch started a while ago (best guess is 100ms based on tests for issue #36) then focus will be triggered anyway. Return early and unset the target element reference so that the subsequent click will be allowed through.
		// Case 2: Without this exception for input elements tapped when the document is contained in an iframe, then any inputted text won't be visible even though the value attribute is updated as the user types (issue #37).
		if ((event.timeStamp - trackingClickStart) > 100 \|\| (deviceIsIOS && window.top !== window && targetTagName === 'input')) {
		this.targetElement = null;
		return false;
		}
		// On some iOS devices, the targetElement supplied with the event is invalid if the layer
		// is performing a transition or scroll, and has to be re-detected manually. Note that
		// for this to function correctly, it must be called after the event target is checked!
		// See issue #57; also filed as rdar://13048589 .
		if (deviceIsIOSWithBadTarget) {
		touch = event.changedTouches[0];

		this.focus(targetElement);
		this.sendClick(targetElement, event);
		// In certain cases arguments of elementFromPoint can be negative, so prevent setting targetElement to null
		targetElement = document.elementFromPoint(touch.pageX - window.pageXOffset, touch.pageY - window.pageYOffset) \|\| targetElement;
		targetElement.fastClickScrollParent = this.targetElement.fastClickScrollParent;
		}

		// Select elements need the event to go through on iOS 4, otherwise the selector menu won't open.
		// Also this breaks opening selects when VoiceOver is active on iOS6, iOS7 (and possibly others)
		if (!deviceIsIOS \|\| targetTagName !== 'select') {
		this.targetElement = null;
		event.preventDefault();
		}
		targetTagName = targetElement.tagName.toLowerCase();
		if (targetTagName === 'label') {
		forElement = this.findControl(targetElement);
		if (forElement) {
		this.focus(targetElement);
		if (deviceIsAndroid) {
		return false;
		}

		return false;
		}
		targetElement = forElement;
		}
		} else if (this.needsFocus(targetElement)) {

		if (deviceIsIOS && !deviceIsIOS4) {
		// Case 1: If the touch started a while ago (best guess is 100ms based on tests for issue #36) then focus will be triggered anyway. Return early and unset the target element reference so that the subsequent click will be allowed through.
		// Case 2: Without this exception for input elements tapped when the document is contained in an iframe, then any inputted text won't be visible even though the value attribute is updated as the user types (issue #37).
		if ((touchEndTime - trackingClickStart) > 100 \|\| (deviceIsIOS && window.top !== window && targetTagName === 'input')) {
		this.targetElement = null;
		return false;
		}

		// Don't send a synthetic click event if the target element is contained within a parent layer that was scrolled
		// and this tap is being used to stop the scrolling (usually initiated by a fling - issue #42).
		scrollParent = targetElement.fastClickScrollParent;
		if (scrollParent && scrollParent.fastClickLastScrollTop !== scrollParent.scrollTop) {
		return true;
		}
		}
		this.focus(targetElement);
		this.sendClick(targetElement, event);

		// Prevent the actual click from going though - unless the target node is marked as requiring
		// real clicks or if it is in the whitelist in which case only non-programmatic clicks are permitted.
		if (!this.needsClick(targetElement)) {
		event.preventDefault();
		this.sendClick(targetElement, event);
		}
		// Select elements need the event to go through on iOS 4, otherwise the selector menu won't open.
		// Also this breaks opening selects when VoiceOver is active on iOS6, iOS7 (and possibly others)
		if (!deviceIsIOS \|\| targetTagName !== 'select') {
		this.targetElement = null;
		event.preventDefault();
		}

		return false;
		};
		return false;
		}

		if (deviceIsIOS && !deviceIsIOS4) {

		/**
		* On touch cancel, stop tracking the click.
		*
		* @returns {void}
		*/
		FastClick.prototype.onTouchCancel = function() {
		this.trackingClick = false;
		this.targetElement = null;
		};
		// Don't send a synthetic click event if the target element is contained within a parent layer that was scrolled
		// and this tap is being used to stop the scrolling (usually initiated by a fling - issue #42).
		scrollParent = targetElement.fastClickScrollParent;
		if (scrollParent && scrollParent.fastClickLastScrollTop !== scrollParent.scrollTop) {
		return true;
		}
		}

		// Prevent the actual click from going though - unless the target node is marked as requiring
		// real clicks or if it is in the whitelist in which case only non-programmatic clicks are permitted.
		if (!this.needsClick(targetElement)) {
		event.preventDefault();
		this.sendClick(targetElement, event);
		}

		/**
		* Determine mouse events which should be permitted.
		*
		* @param {Event} event
		* @returns {boolean}
		*/
		FastClick.prototype.onMouse = function(event) {
		return false;
		};

		// If a target element was never set (because a touch event was never fired) allow the event
		if (!this.targetElement) {
		return true;
		}

		if (this.targetElement.nodeName.toLowerCase() == 'canvas') {
		return true;
		}
		/**
		* On touch cancel, stop tracking the click.
		*
		* @returns {void}
		*/
		FastClick.prototype.onTouchCancel = function() {
		this.trackingClick = false;
		this.targetElement = null;
		};

		if (event.forwardedTouchEvent) {
		return true;
		}

		// Programmatically generated events targeting a specific element should be permitted
		if (!event.cancelable) {
		return true;
		}
		/**
		* Determine mouse events which should be permitted.
		*
		* @param {Event} event
		* @returns {boolean}
		*/
		FastClick.prototype.onMouse = function(event) {

		// Derive and check the target element to see whether the mouse event needs to be permitted;
		// unless explicitly enabled, prevent non-touch click events from triggering actions,
		// to prevent ghost/doubleclicks.
		if (!this.needsClick(this.targetElement) \|\| this.cancelNextClick) {
		// If a target element was never set (because a touch event was never fired) allow the event
		if (!this.targetElement) {
		return true;
		}

		// Prevent any user-added listeners declared on FastClick element from being fired.
		if (event.stopImmediatePropagation) {
		event.stopImmediatePropagation();
		} else {
		if (this.targetElement.nodeName.toLowerCase() == 'canvas') {
		return true;
		}

		// Part of the hack for browsers that don't support Event#stopImmediatePropagation (e.g. Android 2)
		event.propagationStopped = true;
		}
		if (event.forwardedTouchEvent) {
		return true;
		}

		// Cancel the event
		event.stopPropagation();
		event.preventDefault();
		// Programmatically generated events targeting a specific element should be permitted
		if (!event.cancelable) {
		return true;
		}

		return false;
		}
		// Derive and check the target element to see whether the mouse event needs to be permitted;
		// unless explicitly enabled, prevent non-touch click events from triggering actions,
		// to prevent ghost/doubleclicks.
		if (!this.needsClick(this.targetElement) \|\| this.cancelNextClick) {

		// If the mouse event is permitted, return true for the action to go through.
		return true;
		};
		// Prevent any user-added listeners declared on FastClick element from being fired.
		if (event.stopImmediatePropagation) {
		event.stopImmediatePropagation();
		} else {

		// Part of the hack for browsers that don't support Event#stopImmediatePropagation (e.g. Android 2)
		event.propagationStopped = true;
		}

		/**
		* On actual clicks, determine whether this is a touch-generated click, a click action occurring
		* naturally after a delay after a touch (which needs to be cancelled to avoid duplication), or
		* an actual click which should be permitted.
		*
		* @param {Event} event
		* @returns {boolean}
		*/
		FastClick.prototype.onClick = function(event) {
		// Cancel the event
		event.stopPropagation();
		event.preventDefault();

		return false;
		}

		// If the mouse event is permitted, return true for the action to go through.
		return true;
		};


		/**
		* On actual clicks, determine whether this is a touch-generated click, a click action occurring
		* naturally after a delay after a touch (which needs to be cancelled to avoid duplication), or
		* an actual click which should be permitted.
		*
		* @param {Event} event
		* @returns {boolean}
		*/
		FastClick.prototype.onClick = function(event) {
		/**
		@@ -709,151 +737,165 @@ * 当阻止事件冒泡来模拟shadowDom时，fastclick会调用2次，1为默认的body，2为本shadowDom
		}

		var permitted;

		// It's possible for another FastClick-like library delivered with third-party code to fire a click event before FastClick does (issue #44). In that case, set the click-tracking flag back to false and return early. This will cause onTouchEnd to return early.
		if (this.trackingClick) {
		this.targetElement = null;
		this.trackingClick = false;
		return true;
		}
		var permitted;

		// Very odd behaviour on iOS (issue #18): if a submit element is present inside a form and the user hits enter in the iOS simulator or clicks the Go button on the pop-up OS keyboard the a kind of 'fake' click event will be triggered with the submit-type input element as the target.
		if (event.target.type === 'submit' && event.detail === 0) {
		return true;
		}
		// It's possible for another FastClick-like library delivered with third-party code to fire a click event before FastClick does (issue #44). In that case, set the click-tracking flag back to false and return early. This will cause onTouchEnd to return early.
		if (this.trackingClick) {
		this.targetElement = null;
		this.trackingClick = false;
		return true;
		}

		permitted = this.onMouse(event);
		// Very odd behaviour on iOS (issue #18): if a submit element is present inside a form and the user hits enter in the iOS simulator or clicks the Go button on the pop-up OS keyboard the a kind of 'fake' click event will be triggered with the submit-type input element as the target.
		if (event.target.type === 'submit' && event.detail === 0) {
		return true;
		}

		// Only unset targetElement if the click is not permitted. This will ensure that the check for !targetElement in onMouse fails and the browser's click doesn't go through.
		if (!permitted) {
		this.targetElement = null;
		}
		permitted = this.onMouse(event);

		// If clicks are permitted, return true for the action to go through.
		return permitted;
		};
		// Only unset targetElement if the click is not permitted. This will ensure that the check for !targetElement in onMouse fails and the browser's click doesn't go through.
		if (!permitted) {
		this.targetElement = null;
		}

		// If clicks are permitted, return true for the action to go through.
		return permitted;
		};

		/**
		* Remove all FastClick's event listeners.
		*
		* @returns {void}
		*/
		FastClick.prototype.destroy = function() {
		var layer = this.layer;

		if (deviceIsAndroid) {
		layer.removeEventListener('mouseover', this.onMouse, true);
		layer.removeEventListener('mousedown', this.onMouse, true);
		layer.removeEventListener('mouseup', this.onMouse, true);
		}
		/**
		* Remove all FastClick's event listeners.
		*
		* @returns {void}
		*/
		FastClick.prototype.destroy = function() {
		var layer = this.layer;

		layer.removeEventListener('click', this.onClick, true);
		layer.removeEventListener('touchstart', this.onTouchStart, false);
		layer.removeEventListener('touchmove', this.onTouchMove, false);
		layer.removeEventListener('touchend', this.onTouchEnd, false);
		layer.removeEventListener('touchcancel', this.onTouchCancel, false);
		};
		if (deviceIsAndroid) {
		layer.removeEventListener('mouseover', this.onMouse, true);
		layer.removeEventListener('mousedown', this.onMouse, true);
		layer.removeEventListener('mouseup', this.onMouse, true);
		}

		layer.removeEventListener('click', this.onClick, true);
		layer.removeEventListener('touchstart', this.onTouchStart, false);
		layer.removeEventListener('touchmove', this.onTouchMove, false);
		layer.removeEventListener('touchend', this.onTouchEnd, false);
		layer.removeEventListener('touchcancel', this.onTouchCancel, false);
		};

		/**
		* Check whether FastClick is needed.
		*
		* @param {Element} layer The layer to listen on
		*/
		FastClick.notNeeded = function(layer) {
		var metaViewport;
		var chromeVersion;
		var blackberryVersion;
		var firefoxVersion;

		// Devices that don't support touch don't need FastClick
		if (typeof window.ontouchstart === 'undefined') {
		return true;
		}
		/**
		* Check whether FastClick is needed.
		*
		* @param {Element} layer The layer to listen on
		*/
		FastClick.notNeeded = function(layer) {
		var metaViewport;
		var iOSVersion;
		var chromeVersion;
		var blackberryVersion;
		var firefoxVersion;

		// Chrome version - zero for other browsers
		chromeVersion = +(/Chrome\/([0-9]+)/.exec(navigator.userAgent) \|\| [,0])[1];
		// Devices that don't support touch don't need FastClick
		if (typeof window.ontouchstart === 'undefined') {
		return true;
		}

		if (chromeVersion) {
		// iOS 9.3+ doesn't need FastClick
		if (deviceIsIOS) {
		iOSVersion = /OS (\d+)_(\d+)/.exec(userAgent) \|\| [0, 0, 0];
		var major = +iOSVersion[1];
		var minor = +iOSVersion[2];
		if (major > 9 \|\| major === 9 && minor > 2) {
		metaViewport = document.querySelector('meta[name=viewport]');
		if (metaViewport && metaViewport.content.indexOf('user-scalable=no') !== -1) {
		return true;
		}
		}
		}

		if (deviceIsAndroid) {
		metaViewport = document.querySelector('meta[name=viewport]');
		// Chrome version - zero for other browsers
		chromeVersion = +(/Chrome\/([0-9]+)/.exec(userAgent) \|\| [,0])[1];

		if (metaViewport) {
		// Chrome on Android with user-scalable="no" doesn't need FastClick (issue #89)
		if (metaViewport.content.indexOf('user-scalable=no') !== -1) {
		return true;
		}
		// Chrome 32 and above with width=device-width or less don't need FastClick
		if (chromeVersion > 31 && document.documentElement.scrollWidth <= window.outerWidth) {
		return true;
		}
		}
		if (chromeVersion) {

		// Chrome desktop doesn't need FastClick (issue #15)
		} else {
		return true;
		}
		}
		if (deviceIsAndroid) {
		metaViewport = document.querySelector('meta[name=viewport]');

		if (deviceIsBlackBerry10) {
		blackberryVersion = navigator.userAgent.match(/Version\/([0-9])\.([0-9])/);
		if (metaViewport) {
		// Chrome on Android with user-scalable="no" doesn't need FastClick (issue #89)
		if (metaViewport.content.indexOf('user-scalable=no') !== -1) {
		return true;
		}
		// Chrome 32 and above with width=device-width or less don't need FastClick
		if (chromeVersion > 31 && document.documentElement.scrollWidth <= window.outerWidth) {
		return true;
		}
		}

		// BlackBerry 10.3+ does not require Fastclick library.
		// https://github.com/ftlabs/fastclick/issues/251
		if (blackberryVersion[1] >= 10 && blackberryVersion[2] >= 3) {
		metaViewport = document.querySelector('meta[name=viewport]');
		// Chrome desktop doesn't need FastClick (issue #15)
		} else {
		return true;
		}
		}

		if (metaViewport) {
		// user-scalable=no eliminates click delay.
		if (metaViewport.content.indexOf('user-scalable=no') !== -1) {
		return true;
		}
		// width=device-width (or less than device-width) eliminates click delay.
		if (document.documentElement.scrollWidth <= window.outerWidth) {
		return true;
		}
		}
		}
		}
		if (deviceIsBlackBerry10) {
		blackberryVersion = userAgent.match(/Version\/([0-9])\.([0-9])/);

		// IE10 with -ms-touch-action: none or manipulation, which disables double-tap-to-zoom (issue #97)
		if (layer.style.msTouchAction === 'none' \|\| layer.style.msTouchAction === 'manipulation') {
		return true;
		}
		// BlackBerry 10.3+ does not require Fastclick library.
		// https://github.com/ftlabs/fastclick/issues/251
		if (blackberryVersion && blackberryVersion[1] >= 10 && blackberryVersion[2] >= 3) {
		metaViewport = document.querySelector('meta[name=viewport]');

		// Firefox version - zero for other browsers
		firefoxVersion = +(/Firefox\/([0-9]+)/.exec(navigator.userAgent) \|\| [,0])[1];
		if (metaViewport) {
		// user-scalable=no eliminates click delay.
		if (metaViewport.content.indexOf('user-scalable=no') !== -1) {
		return true;
		}
		// width=device-width (or less than device-width) eliminates click delay.
		if (document.documentElement.scrollWidth <= window.outerWidth) {
		return true;
		}
		}
		}
		}

		if (firefoxVersion >= 27) {
		// Firefox 27+ does not have tap delay if the content is not zoomable - https://bugzilla.mozilla.org/show_bug.cgi?id=922896
		// IE10 with -ms-touch-action: none or manipulation, which disables double-tap-to-zoom (issue #97)
		if (layer.style.msTouchAction === 'none' \|\| layer.style.msTouchAction === 'manipulation') {
		return true;
		}

		metaViewport = document.querySelector('meta[name=viewport]');
		if (metaViewport && (metaViewport.content.indexOf('user-scalable=no') !== -1 \|\| document.documentElement.scrollWidth <= window.outerWidth)) {
		return true;
		}
		}
		// Firefox version - zero for other browsers
		firefoxVersion = +(/Firefox\/([0-9]+)/.exec(userAgent) \|\| [,0])[1];

		// IE11: prefixed -ms-touch-action is no longer supported and it's recomended to use non-prefixed version
		// http://msdn.microsoft.com/en-us/library/windows/apps/Hh767313.aspx
		if (layer.style.touchAction === 'none' \|\| layer.style.touchAction === 'manipulation') {
		return true;
		}
		if (firefoxVersion >= 27) {
		// Firefox 27+ does not have tap delay if the content is not zoomable - https://bugzilla.mozilla.org/show_bug.cgi?id=922896

		return false;
		};
		metaViewport = document.querySelector('meta[name=viewport]');
		if (metaViewport && (metaViewport.content.indexOf('user-scalable=no') !== -1 \|\| document.documentElement.scrollWidth <= window.outerWidth)) {
		return true;
		}
		}

		// IE11: prefixed -ms-touch-action is no longer supported and it's recomended to use non-prefixed version
		// http://msdn.microsoft.com/en-us/library/windows/apps/Hh767313.aspx
		if (layer.style.touchAction === 'none' \|\| layer.style.touchAction === 'manipulation') {
		return true;
		}

		/**
		* Factory method for creating a FastClick object
		*
		* @param {Element} layer The layer to listen on
		* @param {Object} [options={}] The options to override the defaults
		*/
		FastClick.attach = function(layer, options) {
		return new FastClick(layer, options);
		};
		return false;
		};


		/**
		* Factory method for creating a FastClick object
		*
		* @param {Element} layer The layer to listen on
		* @param {Object} [options={}] The options to override the defaults
		*/
		FastClick.attach = function(layer, options) {
		return new FastClick(layer, options);
		};


		if (typeof define === 'function' && typeof define.amd === 'object' && define.amd) {
		@@ -860,0 +902,0 @@

package.json

		{
		"name": "migi-fastclick",
		"version": "1.0.10",
		"version": "1.1.0",
		"description": "Polyfill to remove click delays on browsers with touch UIs.",
		@@ -5,0 +5,0 @@ "maintainers": [

.idea/.name

.npmignore

.idea/fastclick.iml

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.idea/misc.xml

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.idea/workspace.xml

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