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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>JSDoc: Namespace: util</title>
<script src="scripts/prettify/prettify.js"> </script>
<script src="scripts/prettify/lang-css.js"> </script>
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</head>
<body>
<ul id="header">
<li><a href="http://fabricjs.com/">Home</a></li>
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<div id="main">
<h1 class="page-title">Namespace: util</h1>
<section>
<header>
<h2>
<span class="ancestors"><a href="fabric.html">fabric</a>.</span>
util
</h2>
</header>
<article>
<div class="container-overview">
<dl class="details">
<dt class="tag-source">Source:</dt>
<dd class="tag-source"><ul class="dummy"><li>
<a href="fabric.js.html">fabric.js</a>, <a href="fabric.js.html#line320">line 320</a>
</li></ul></dd>
</dl>
</div>
<h3 class="subsection-title">Namespaces</h3>
<dl>
<dt><a href="namespaces.html#fabric.util.array"><a href="fabric.util.array.html">array</a></a></dt>
<dd></dd>
<dt><a href="namespaces.html#fabric.util.ease"><a href="fabric.util.ease.html">ease</a></a></dt>
<dd></dd>
<dt><a href="namespaces.html#fabric.util.object"><a href="fabric.util.object.html">object</a></a></dt>
<dd></dd>
<dt><a href="namespaces.html#fabric.util.string"><a href="fabric.util.string.html">string</a></a></dt>
<dd></dd>
</dl>
<h3 class="subsection-title">Members</h3>
<dl>
<dt>
<h4 class="name" id="getElementStyle">
<span class="type-signature"><static> </span>getElementStyle<span class="type-signature"></span>
<a href="#getElementStyle" class="anchor">§</a>
</h4>
</dt>
<dd>
<div class="description">
Returns style attribute value of a given element
</div>
<dl class="details">
<dt class="tag-source">Source:</dt>
<dd class="tag-source"><ul class="dummy"><li>
<a href="fabric.js.html">fabric.js</a>, <a href="fabric.js.html#line1947">line 1947</a>
</li></ul></dd>
</dl>
</dd>
</dl>
<h3 class="subsection-title">Methods</h3>
<dl>
<dt>
<h4 class="name" id="addClass">
<span class="type-signature"><static> </span>addClass<span class="signature">(element, className)</span><span class="type-signature"></span>
<a href="#addClass" class="anchor">§</a>
</h4>
</dt>
<dd>
<div class="description">
Adds class to an element
</div>
<h5>Parameters:</h5>
<table class="params">
<thead>
<tr>
<th>Name</th>
<th>Type</th>
<th class="last">Description</th>
</tr>
</thead>
<tbody>
<tr>
<td class="name"><code>element</code></td>
<td class="type">
<span class="param-type">HTMLElement</span>
</td>
<td class="description last">Element to add class to</td>
</tr>
<tr>
<td class="name"><code>className</code></td>
<td class="type">
<span class="param-type">String</span>
</td>
<td class="description last">Class to add to an element</td>
</tr>
</tbody>
</table>
<dl class="details">
<dt class="tag-source">Source:</dt>
<dd class="tag-source"><ul class="dummy"><li>
<a href="fabric.js.html">fabric.js</a>, <a href="fabric.js.html#line1826">line 1826</a>
</li></ul></dd>
</dl>
</dd>
<dt>
<h4 class="name" id="addListener">
<span class="type-signature"><static> </span>addListener<span class="signature">(element, eventName, handler)</span><span class="type-signature"></span>
<a href="#addListener" class="anchor">§</a>
</h4>
</dt>
<dd>
<div class="description">
Adds an event listener to an element
</div>
<h5>Parameters:</h5>
<table class="params">
<thead>
<tr>
<th>Name</th>
<th>Type</th>
<th class="last">Description</th>
</tr>
</thead>
<tbody>
<tr>
<td class="name"><code>element</code></td>
<td class="type">
<span class="param-type">HTMLElement</span>
</td>
<td class="description last"></td>
</tr>
<tr>
<td class="name"><code>eventName</code></td>
<td class="type">
<span class="param-type">String</span>
</td>
<td class="description last"></td>
</tr>
<tr>
<td class="name"><code>handler</code></td>
<td class="type">
<span class="param-type"><a href="Function.html">Function</a></span>
</td>
<td class="description last"></td>
</tr>
</tbody>
</table>
<dl class="details">
<dt class="tag-source">Source:</dt>
<dd class="tag-source"><ul class="dummy"><li>
<a href="fabric.js.html">fabric.js</a>, <a href="fabric.js.html#line1617">line 1617</a>
</li></ul></dd>
</dl>
</dd>
<dt>
<h4 class="name" id="animate">
<span class="type-signature"><static> </span>animate<span class="signature">(<span class="optional">options</span>)</span><span class="type-signature"></span>
<a href="#animate" class="anchor">§</a>
</h4>
</dt>
<dd>
<div class="description">
Changes value from one to another within certain period of time, invoking callbacks as value is being changed.
</div>
<h5>Parameters:</h5>
<table class="params">
<thead>
<tr>
<th>Name</th>
<th>Type</th>
<th>Argument</th>
<th class="last">Description</th>
</tr>
</thead>
<tbody>
<tr>
<td class="name"><code>options</code></td>
<td class="type">
<span class="param-type">Object</span>
</td>
<td class="attributes">
<optional><br>
</td>
<td class="description last">Animation options
<h6>Properties</h6>
<table class="params">
<thead>
<tr>
<th>Name</th>
<th>Type</th>
<th>Argument</th>
<th>Default</th>
<th class="last">Description</th>
</tr>
</thead>
<tbody>
<tr>
<td class="name"><code>onChange</code></td>
<td class="type">
<span class="param-type"><a href="Function.html">Function</a></span>
</td>
<td class="attributes">
<optional><br>
</td>
<td class="default">
</td>
<td class="description last">Callback; invoked on every value change</td>
</tr>
<tr>
<td class="name"><code>onComplete</code></td>
<td class="type">
<span class="param-type"><a href="Function.html">Function</a></span>
</td>
<td class="attributes">
<optional><br>
</td>
<td class="default">
</td>
<td class="description last">Callback; invoked when value change is completed</td>
</tr>
<tr>
<td class="name"><code>startValue</code></td>
<td class="type">
<span class="param-type">Number</span>
</td>
<td class="attributes">
<optional><br>
</td>
<td class="default">
0
</td>
<td class="description last">Starting value</td>
</tr>
<tr>
<td class="name"><code>endValue</code></td>
<td class="type">
<span class="param-type">Number</span>
</td>
<td class="attributes">
<optional><br>
</td>
<td class="default">
100
</td>
<td class="description last">Ending value</td>
</tr>
<tr>
<td class="name"><code>byValue</code></td>
<td class="type">
<span class="param-type">Number</span>
</td>
<td class="attributes">
<optional><br>
</td>
<td class="default">
100
</td>
<td class="description last">Value to modify the property by</td>
</tr>
<tr>
<td class="name"><code>easing</code></td>
<td class="type">
<span class="param-type"><a href="Function.html">Function</a></span>
</td>
<td class="attributes">
<optional><br>
</td>
<td class="default">
</td>
<td class="description last">Easing function</td>
</tr>
<tr>
<td class="name"><code>duration</code></td>
<td class="type">
<span class="param-type">Number</span>
</td>
<td class="attributes">
<optional><br>
</td>
<td class="default">
500
</td>
<td class="description last">Duration of change (in ms)</td>
</tr>
</tbody>
</table>
</td>
</tr>
</tbody>
</table>
<dl class="details">
<dt class="tag-source">Source:</dt>
<dd class="tag-source"><ul class="dummy"><li>
<a href="fabric.js.html">fabric.js</a>, <a href="fabric.js.html#line2172">line 2172</a>
</li></ul></dd>
</dl>
</dd>
<dt>
<h4 class="name" id="clipContext">
<span class="type-signature"><static> </span>clipContext<span class="signature">(receiver, ctx)</span><span class="type-signature"></span>
<a href="#clipContext" class="anchor">§</a>
</h4>
</dt>
<dd>
<h5>Parameters:</h5>
<table class="params">
<thead>
<tr>
<th>Name</th>
<th>Type</th>