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@polymer/iron-a11y-keys-behavior
Advanced tools
A behavior that enables keybindings for greater a11y.
Polymer.IronA11yKeysBehavior
provides a normalized interface for processing
keyboard commands that pertain to WAI-ARIA best practices.
The element takes care of browser differences with respect to Keyboard events
and uses an expressive syntax to filter key presses.
Use the keyBindings
prototype property to express what combination of keys
will trigger the callback. A key binding has the format
"KEY+MODIFIER:EVENT": "callback"
("KEY": "callback"
or
"KEY:EVENT": "callback"
are valid as well). Some examples:
keyBindings: {
'space': '_onKeydown', // same as 'space:keydown'
'shift+tab': '_onKeydown',
'enter:keypress': '_onKeypress',
'esc:keyup': '_onKeyup'
}
The callback will receive with an event containing the following information in event.detail
:
_onKeydown: function(event) {
console.log(event.detail.combo); // KEY+MODIFIER, e.g. "shift+tab"
console.log(event.detail.key); // KEY only, e.g. "tab"
console.log(event.detail.event); // EVENT, e.g. "keydown"
console.log(event.detail.keyboardEvent); // the original KeyboardEvent
}
Use the keyEventTarget
attribute to set up event handlers on a specific
node.
See the demo source code for an example.
FAQs
A behavior that enables keybindings for greater a11y.
The npm package @polymer/iron-a11y-keys-behavior receives a total of 25,420 weekly downloads. As such, @polymer/iron-a11y-keys-behavior popularity was classified as popular.
We found that @polymer/iron-a11y-keys-behavior demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 11 open source maintainers collaborating on the project.
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