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<article id="post-363" class="post-363 post type-post status-publish format-standard hentry category-core category-setup-methods category-10">
<header class="entry-header">
<h1 class="entry-title">jQuery.noConflict()</h1>
<hr>
<div class="entry-meta">
Categories: <span class="category"><a href="http://api.jquery.com/category/core/" title="View all posts in Core">Core</a></span><span class="category-divider"> | </span><span class="category"><a href="http://api.jquery.com/category/miscellaneous/" title="View all posts in Miscellaneous">Miscellaneous</a> &gt; <a href="http://api.jquery.com/category/miscellaneous/setup-methods/" title="View all posts in Setup Methods">Setup Methods</a></span> </div><!-- .entry-meta -->
</header><!-- .entry-header -->
<div class="entry-content">
<article id="jQuery-noConflict1" class="entry method"><h2 class="section-title">
<span class="name">jQuery.noConflict( [removeAll ] )</span><span class="returns">Returns: <a href="http://api.jquery.com/Types/#Object">Object</a></span>
</h2>
<div class="entry-wrapper">
<p class="desc"><strong>Description: </strong>Relinquish jQuery's control of the <code>$</code> variable.</p>
<ul class="signatures"><li class="signature">
<h4 class="name">
<span class="version-details">version added: <a href="http://api.jquery.com/category/version/1.0/">1.0</a></span><a id="jQuery-noConflict-removeAll" href="#jQuery-noConflict-removeAll"><span class="icon-link"></span>jQuery.noConflict( [removeAll ] )</a>
</h4>
<ul><li>
<div><strong>removeAll</strong></div>
<div>Type: <a href="http://api.jquery.com/Types/#Boolean">Boolean</a>
</div>
<div>A Boolean indicating whether to remove all jQuery variables from the global scope (including jQuery itself).</div>
</li></ul>
</li></ul>
<div class="longdesc" id="entry-longdesc">
<p>Many JavaScript libraries use <code>$</code> as a function or variable name, just as jQuery does. In jQuery's case, <code>$</code> is just an alias for <code>jQuery</code>, so all functionality is available without using <code>$</code>. If you need to use another JavaScript library alongside jQuery, return control of <code>$</code> back to the other library with a call to <code>$.noConflict()</code>. Old references of <code>$</code> are saved during jQuery initialization; <code>noConflict()</code> simply restores them.</p>
<p>If for some reason two versions of jQuery are loaded (which is not recommended), calling <code>$.noConflict( true )</code> from the second version will return the globally scoped jQuery variables to those of the first version.</p>
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<pre><div class="container"><div class="line"><code><span class="tag">&lt;<span class="title">script</span> <span class="attribute">src</span>=<span class="value">"other_lib.js"</span>&gt;</span><span class="javascript"></span><span class="tag">&lt;/<span class="title">script</span>&gt;</span></code></div></div><div class="container"><div class="line"><code><span class="tag">&lt;<span class="title">script</span> <span class="attribute">src</span>=<span class="value">"jquery.js"</span>&gt;</span><span class="javascript"></span><span class="tag">&lt;/<span class="title">script</span>&gt;</span></code></div></div><div class="container"><div class="line"><code><span class="tag">&lt;<span class="title">script</span>&gt;</span><span class="javascript"></span></code></div></div><div class="container"><div class="line"><code>$.noConflict();</code></div></div><div class="container"><div class="line"><code><span class="comment">// Code that uses other library's $ can follow here.</span></code></div></div><div class="container"><div class="line"><code><span class="tag">&lt;/<span class="title">script</span>&gt;</span></code></div></div></pre>
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<p>This technique is especially effective in conjunction with the <code>.ready()</code> method's ability to alias the jQuery object, as within callback passed to <code>.ready()</code> you can use <code>$</code> if you wish without fear of conflicts later:</p>
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<pre><div class="container"><div class="line"><code><span class="tag">&lt;<span class="title">script</span> <span class="attribute">src</span>=<span class="value">"other_lib.js"</span>&gt;</span><span class="javascript"></span><span class="tag">&lt;/<span class="title">script</span>&gt;</span></code></div></div><div class="container"><div class="line"><code><span class="tag">&lt;<span class="title">script</span> <span class="attribute">src</span>=<span class="value">"jquery.js"</span>&gt;</span><span class="javascript"></span><span class="tag">&lt;/<span class="title">script</span>&gt;</span></code></div></div><div class="container"><div class="line"><code><span class="tag">&lt;<span class="title">script</span>&gt;</span><span class="javascript"></span></code></div></div><div class="container"><div class="line"><code>$.noConflict();</code></div></div><div class="container"><div class="line"><code>jQuery( document ).ready(<span class="keyword">function</span>( $ ) {</code></div></div><div class="container"><div class="line"><code> <span class="comment">// Code that uses jQuery's $ can follow here.</span></code></div></div><div class="container"><div class="line"><code>});</code></div></div><div class="container"><div class="line"><code><span class="comment">// Code that uses other library's $ can follow here.</span></code></div></div><div class="container"><div class="line"><code><span class="tag">&lt;/<span class="title">script</span>&gt;</span></code></div></div></pre>
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<p>If necessary, you can free up the <code>jQuery</code> name as well by passing <code>true</code>
as an argument to the method. This is rarely necessary, and if you must
do this (for example, if you need to use multiple versions of the
jQuery library on the same page), you need to consider that most
plug-ins rely on the presence of the <code>jQuery</code> variable and may not operate correctly in this situation.</p>
</div>
<section class="entry-examples" id="entry-examples"><header><h2>Examples:</h2></header><div class="entry-example" id="example-0">
<h4>Example: <span class="desc">Map the original object that was referenced by $ back to $.</span>
</h4>
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<pre><div class="container"><div class="line"><code>jQuery.noConflict();</code></div></div><div class="container"><div class="line"><code><span class="comment">// Do something with jQuery</span></code></div></div><div class="container"><div class="line"><code>jQuery( <span class="string">"div p"</span> ).hide();</code></div></div><div class="container"><div class="line"><code><span class="comment">// Do something with another library's $()</span></code></div></div><div class="container"><div class="line"><code>$( <span class="string">"content"</span> ).style.display = <span class="string">"none"</span>;</code></div></div></pre>
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<div class="entry-example" id="example-1">
<h4>Example: <span class="desc">Revert the $ alias and then create and
execute a function to provide the $ as a jQuery alias inside the
function's scope. Inside the function the original $ object is not
available. This works well for most plugins that don't rely on any other
library.
</span>
</h4>
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<pre><div class="container"><div class="line"><code>jQuery.noConflict();</code></div></div><div class="container"><div class="line"><code>(<span class="keyword">function</span>( $ ) {</code></div></div><div class="container"><div class="line"><code> $(<span class="keyword">function</span>() {</code></div></div><div class="container"><div class="line"><code> <span class="comment">// More code using $ as alias to jQuery</span></code></div></div><div class="container"><div class="line"><code> });</code></div></div><div class="container"><div class="line"><code>})(jQuery);</code></div></div><div class="container"><div class="line"><code> </code></div></div><div class="container"><div class="line"><code><span class="comment">// Other code using $ as an alias to the other library</span></code></div></div></pre>
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<div class="entry-example" id="example-2">
<h4>Example: <span class="desc">Create a different alias instead of jQuery to use in the rest of the script.</span>
</h4>
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<pre><div class="container"><div class="line"><code><span class="keyword">var</span> j = jQuery.noConflict();</code></div></div><div class="container"><div class="line"><code> </code></div></div><div class="container"><div class="line"><code><span class="comment">// Do something with jQuery</span></code></div></div><div class="container"><div class="line"><code>j( <span class="string">"div p"</span> ).hide();</code></div></div><div class="container"><div class="line"><code> </code></div></div><div class="container"><div class="line"><code><span class="comment">// Do something with another library's $()</span></code></div></div><div class="container"><div class="line"><code>$( <span class="string">"content"</span> ).style.display = <span class="string">"none"</span>;</code></div></div></pre>
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<div class="entry-example" id="example-3">
<h4>Example: <span class="desc">Completely move jQuery to a new namespace in another object.</span>
</h4>
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<pre><div class="container"><div class="line"><code><span class="keyword">var</span> dom = {};</code></div></div><div class="container"><div class="line"><code>dom.query = jQuery.noConflict( <span class="literal">true</span> );</code></div></div></pre>
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<h4>Result:</h4>
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<pre><div class="container"><div class="line"><code><span class="comment">// Do something with the new jQuery</span></code></div></div><div class="container"><div class="line"><code>dom.query( <span class="string">"div p"</span> ).hide();</code></div></div><div class="container"><div class="line"><code> </code></div></div><div class="container"><div class="line"><code><span class="comment">// Do something with another library's $()</span></code></div></div><div class="container"><div class="line"><code>$( <span class="string">"content"</span> ).style.display = <span class="string">"none"</span>;</code></div></div><div class="container"><div class="line"><code> </code></div></div><div class="container"><div class="line"><code><span class="comment">// Do something with another version of jQuery</span></code></div></div><div class="container"><div class="line"><code>jQuery( <span class="string">"div &gt; p"</span> ).hide();</code></div></div></pre>
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<div class="entry-example" id="example-4">
<h4>Example: <span class="desc">Load two versions of jQuery (not recommended). Then, restore jQuery's globally scoped variables to the first loaded jQuery.</span>
</h4>
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</td>
<td class="code">
<pre><div class="container"><div class="line"><code><span class="doctype">&lt;!doctype html&gt;</span></code></div></div><div class="container"><div class="line"><code><span class="tag">&lt;<span class="title">html</span> <span class="attribute">lang</span>=<span class="value">"en"</span>&gt;</span></code></div></div><div class="container"><div class="line"><code><span class="tag">&lt;<span class="title">head</span>&gt;</span></code></div></div><div class="container"><div class="line"><code> <span class="tag">&lt;<span class="title">meta</span> <span class="attribute">charset</span>=<span class="value">"utf-8"</span>&gt;</span></code></div></div><div class="container"><div class="line"><code> <span class="tag">&lt;<span class="title">title</span>&gt;</span>jQuery.noConflict demo<span class="tag">&lt;/<span class="title">title</span>&gt;</span></code></div></div><div class="container"><div class="line"><code> <span class="tag">&lt;<span class="title">script</span> <span class="attribute">src</span>=<span class="value">"//code.jquery.com/jquery-1.10.2.js"</span>&gt;</span><span class="javascript"></span><span class="tag">&lt;/<span class="title">script</span>&gt;</span></code></div></div><div class="container"><div class="line"><code><span class="tag">&lt;/<span class="title">head</span>&gt;</span></code></div></div><div class="container"><div class="line"><code><span class="tag">&lt;<span class="title">body</span>&gt;</span></code></div></div><div class="container"><div class="line"><code> </code></div></div><div class="container"><div class="line"><code><span class="tag">&lt;<span class="title">div</span> <span class="attribute">id</span>=<span class="value">"log"</span>&gt;</span></code></div></div><div class="container"><div class="line"><code> <span class="tag">&lt;<span class="title">h3</span>&gt;</span>Before $.noConflict(true)<span class="tag">&lt;/<span class="title">h3</span>&gt;</span></code></div></div><div class="container"><div class="line"><code><span class="tag">&lt;/<span class="title">div</span>&gt;</span></code></div></div><div class="container"><div class="line"><code><span class="tag">&lt;<span class="title">script</span> <span class="attribute">src</span>=<span class="value">"//code.jquery.com/jquery-1.6.2.js"</span>&gt;</span><span class="javascript"></span><span class="tag">&lt;/<span class="title">script</span>&gt;</span></code></div></div><div class="container"><div class="line"><code> </code></div></div><div class="container"><div class="line"><code><span class="tag">&lt;<span class="title">script</span>&gt;</span><span class="javascript"></span></code></div></div><div class="container"><div class="line"><code><span class="keyword">var</span> $log = $( <span class="string">"#log"</span> );</code></div></div><div class="container"><div class="line"><code> </code></div></div><div class="container"><div class="line"><code>$log.append( <span class="string">"2nd loaded jQuery version ($): "</span> + $.fn.jquery + <span class="string">"&lt;br&gt;"</span> );</code></div></div><div class="container"><div class="line"><code> </code></div></div><div class="container"><div class="line"><code><span class="comment">// Restore globally scoped jQuery variables to the first version loaded</span></code></div></div><div class="container"><div class="line"><code><span class="comment">// (the newer version)</span></code></div></div><div class="container"><div class="line"><code> </code></div></div><div class="container"><div class="line"><code>jq162 = jQuery.noConflict( <span class="literal">true</span> );</code></div></div><div class="container"><div class="line"><code> </code></div></div><div class="container"><div class="line"><code>$log.append( <span class="string">"&lt;h3&gt;After $.noConflict(true)&lt;/h3&gt;"</span> );</code></div></div><div class="container"><div class="line"><code>$log.append( <span class="string">"1st loaded jQuery version ($): "</span> + $.fn.jquery + <span class="string">"&lt;br&gt;"</span> );</code></div></div><div class="container"><div class="line"><code>$log.append( <span class="string">"2nd loaded jQuery version (jq162): "</span> + jq162.fn.jquery + <span class="string">"&lt;br&gt;"</span> );</code></div></div><div class="container"><div class="line"><code><span class="tag">&lt;/<span class="title">script</span>&gt;</span></code></div></div><div class="container"><div class="line"><code> </code></div></div><div class="container"><div class="line"><code><span class="tag">&lt;/<span class="title">body</span>&gt;</span></code></div></div><div class="container"><div class="line"><code><span class="tag">&lt;/<span class="title">html</span>&gt;</span></code></div></div></pre>
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<h4>Demo:</h4>
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