@wordpress/dom

What is @wordpress/dom?

@wordpress/dom is a utility package for manipulating and interacting with the DOM (Document Object Model) in WordPress projects. It provides a set of functions to handle common DOM operations, making it easier to work with elements, attributes, and events in a WordPress environment.

What are @wordpress/dom's main functionalities?

Focus Management

This feature allows developers to manage focus within the DOM, such as focusing the first tabbable element within a container. This is particularly useful for accessibility and ensuring a smooth user experience.

const { focus } = require('@wordpress/dom');

// Example: Focus the first tabbable element within a container
focus.focusTabbable(containerElement);

Element Manipulation

Provides utility functions to manipulate DOM elements, such as removing an element from the DOM. This simplifies common tasks that would otherwise require more verbose native DOM methods.

const { remove } = require('@wordpress/dom');

// Example: Remove an element from the DOM
remove(elementToRemove);

Attribute Management

Allows for easy management of element attributes, such as toggling an attribute's presence or value. This is useful for dynamically updating the DOM based on user interactions or application state.

const { toggleAttribute } = require('@wordpress/dom');

// Example: Toggle an attribute on an element
toggleAttribute(element, 'aria-hidden', true);

Other packages similar to @wordpress/dom

jquery

jQuery is a fast, small, and feature-rich JavaScript library. It makes things like HTML document traversal and manipulation, event handling, and animation much simpler with an easy-to-use API that works across a multitude of browsers. Compared to @wordpress/dom, jQuery is more general-purpose and widely used outside of WordPress-specific projects.

dom-helpers

dom-helpers is a tiny modular DOM library that provides a set of utilities for DOM manipulation. It is similar to @wordpress/dom in that it offers functions for common DOM tasks, but it is not specifically tailored for WordPress environments.

vanilla-js-dom

Vanilla JS DOM is a collection of utility functions for DOM manipulation using vanilla JavaScript. It provides similar functionalities to @wordpress/dom but is designed to be a lightweight alternative without any dependencies, suitable for projects that do not require the full WordPress ecosystem.

README

DOM

DOM utilities module for WordPress.

Installation

Install the module

npm install @wordpress/dom --save

API

computeCaretRect

Get the rectangle for the selection in a container.

Parameters

• win Window: The window of the selection.

Returns

• DOMRect | null: The rectangle.

documentHasSelection

Check whether the current document has a selection. This checks for both focus in an input field and general text selection.

Parameters

• doc Document: The document to check.

Returns

• boolean: True if there is selection, false if not.

documentHasTextSelection

Check whether the current document has selected text. This applies to ranges of text in the document, and not selection inside <input> and <textarea> elements.

See: https://developer.mozilla.org/en-US/docs/Web/API/Window/getSelection#Related_objects.

Parameters

• doc Document: The document to check.

Returns

• boolean: True if there is selection, false if not.

documentHasUncollapsedSelection

Check whether the current document has any sort of selection. This includes ranges of text across elements and any selection inside <input> and <textarea> elements.

Parameters

• doc Document: The document to check.

Returns

• boolean: Whether there is any sort of "selection" in the document.

focus

Object grouping focusable and tabbable utils under the keys with the same name.

getFilesFromDataTransfer

Gets all files from a DataTransfer object.

Parameters

• dataTransfer DataTransfer: DataTransfer object to inspect.

Returns

• File[]: An array containing all files.

getOffsetParent

Returns the closest positioned element, or null under any of the conditions of the offsetParent specification. Unlike offsetParent, this function is not limited to HTMLElement and accepts any Node (e.g. Node.TEXT_NODE).

Related

• https://drafts.csswg.org/cssom-view/#dom-htmlelement-offsetparent

Parameters

• node Node: Node from which to find offset parent.

Returns

• Node | null: Offset parent.

getPhrasingContentSchema

Get schema of possible paths for phrasing content.

Related

• https://developer.mozilla.org/en-US/docs/Web/Guide/HTML/Content_categories#Phrasing_content

Parameters

• context [string]: Set to "paste" to exclude invisible elements and sensitive data.

Returns

• Partial<ContentSchema>: Schema.

getRectangleFromRange

Get the rectangle of a given Range.

Parameters

• range Range: The range.

Returns

• DOMRect: The rectangle.

getScrollContainer

Given a DOM node, finds the closest scrollable container node.

Parameters

• node Element | null: Node from which to start.

Returns

• Element | undefined: Scrollable container node, if found.

insertAfter

Given two DOM nodes, inserts the former in the DOM as the next sibling of the latter.

Parameters

• newNode Node: Node to be inserted.
• referenceNode Node: Node after which to perform the insertion.

Returns

• void:

isEmpty

Recursively checks if an element is empty. An element is not empty if it contains text or contains elements with attributes such as images.

Parameters

• element Element: The element to check.

Returns

• boolean: Whether or not the element is empty.

isEntirelySelected

Check whether the contents of the element have been entirely selected. Returns true if there is no possibility of selection.

Parameters

• element HTMLElement: The element to check.

Returns

• boolean: True if entirely selected, false if not.

isHorizontalEdge

Check whether the selection is horizontally at the edge of the container.

Parameters

• container Element: Focusable element.
• isReverse boolean: Set to true to check left, false for right.

Returns

• boolean: True if at the horizontal edge, false if not.

isNumberInput

Check whether the given element is an input field of type number and has a valueAsNumber

Parameters

• node Node: The HTML node.

Returns

• node is HTMLInputElement: True if the node is input and holds a number.

isPhrasingContent

Find out whether or not the given node is phrasing content.

Related

• https://developer.mozilla.org/en-US/docs/Web/Guide/HTML/Content_categories#Phrasing_content

Parameters

• node Node: The node to test.

Returns

• boolean: True if phrasing content, false if not.

isRTL

Whether the element's text direction is right-to-left.

Parameters

• element Element: The element to check.

Returns

• boolean: True if rtl, false if ltr.

isTextContent

Parameters

• node Node:

Returns

• boolean: Node is text content

isTextField

Check whether the given element is a text field, where text field is defined by the ability to select within the input, or that it is contenteditable.

See: https://html.spec.whatwg.org/#textFieldSelection

Parameters

• node Node: The HTML element.

Returns

• node is HTMLElement: True if the element is an text field, false if not.

isVerticalEdge

Check whether the selection is vertically at the edge of the container.

Parameters

• container Element: Focusable element.
• isReverse boolean: Set to true to check top, false for bottom.

Returns

• boolean: True if at the vertical edge, false if not.

placeCaretAtHorizontalEdge

Places the caret at start or end of a given element.

Parameters

• container HTMLElement: Focusable element.
• isReverse boolean: True for end, false for start.

placeCaretAtVerticalEdge

Places the caret at the top or bottom of a given element.

Parameters

• container HTMLElement: Focusable element.
• isReverse boolean: True for bottom, false for top.
• rect [DOMRect]: The rectangle to position the caret with.

remove

Given a DOM node, removes it from the DOM.

Parameters

• node Node: Node to be removed.

Returns

• void:

removeInvalidHTML

Given a schema, unwraps or removes nodes, attributes and classes on HTML.

Parameters

• HTML string: The HTML to clean up.
• schema import('./clean-node-list').Schema: Schema for the HTML.
• inline boolean: Whether to clean for inline mode.

Returns

• string: The cleaned up HTML.

replace

Given two DOM nodes, replaces the former with the latter in the DOM.

Parameters

• processedNode Element: Node to be removed.
• newNode Element: Node to be inserted in its place.

Returns

• void:

replaceTag

Replaces the given node with a new node with the given tag name.

Parameters

• node Element: The node to replace
• tagName string: The new tag name.

Returns

• Element: The new node.

safeHTML

Strips scripts and on* attributes from HTML.

Parameters

• html string: HTML to sanitize.

Returns

• string: The sanitized HTML.

unwrap

Unwrap the given node. This means any child nodes are moved to the parent.

Parameters

• node Node: The node to unwrap.

Returns

• void:

wrap

Wraps the given node with a new node with the given tag name.

Parameters

• newNode Element: The node to insert.
• referenceNode Element: The node to wrap.