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Yep - exactly like that. You will need to include the Regex Selector extension as it's not standard (<a href="https://gist.github.com/fny/1887398" rel="ugc">https://gist.github.com/fny/1887398</a><a href="https://gist.github.com/fny/1887398" rel="ugc"></a>)<br />
<br />
Then you just setup your regex to match whatever you need. Your selector will currently select all direct children of #root_element_id that have a classname starting with underscore and followed by at least 4 (case-insensitive) alphanumeric characters<br />
<br />

<pre><code id="code-20-42582763-1">&lt;div id=&quot;root_element_id&quot;&gt;
    &lt;div class=&quot;_blue&quot;&gt;MATCH&lt;/div&gt;
    &lt;div class=&quot;_myClass&quot;&gt;MATCH&lt;/div&gt;
    &lt;div class=&quot;testClass&quot;&gt;NO MATCH&lt;/div&gt;
    &lt;div class=&quot;_a123456&quot;&gt;
        MATCH
        &lt;div class=&quot;_blue&quot;&gt;NO MATCH&lt;/div&gt;
    &lt;/div&gt;
&lt;/div&gt;</code></pre>
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Yep - exactly like that. You will need to include the Regex Selector extension as it's not standard (https://gist.github.com/fny/1887398 [https://gist.github.com/fny/1887398]https://gist.github.com/fny/1887398)

Then you just setup your regex to match whatever you need. Your selector will currently select all direct children of #root_element_id that have a classname starting with underscore and followed by at least 4 (case-insensitive) alphanumeric characters



<div id="root_element_id">
    <div class="_blue">MATCH</div>
    <div class="_myClass">MATCH</div>
    <div class="testClass">NO MATCH</div>
    <div class="_a123456">
        MATCH
        <div class="_blue">NO MATCH</div>
    </div>
</div>

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<div class="content wysiwyg-content">
How would i get all child elements of a root element by class name using a regex pattern?<br />
<br />
something like this<br />
<br />
var items = $(&quot;#root_element_id&quot;).chil<wbr />dren(&quot;div:<wbr />regex(clas<wbr />s,\_[a-z0-<wbr />9]{4})&quot;);
</div>
</div>


How would i get all child elements of a root element by class name using a regex pattern?

something like this

var items = $("#root_element_id").children("div:regex(class,\_[a-z0-9]{4})");

get all child elements using a regex pattern?

jQuery (Core) is a cross-browser JavaScript library that provides abstractions for common client-side tasks such as Document Object Model (DOM) traversal, DOM manipulation, event handling, animation and Ajax. jQuery also provides a platform to create plugins that extend jQuery's capabilities beyond those already provided by the library.

jQuery

A regular expression ("regex") is a sequence of characters that define a search pattern, mainly for use in pattern matching with strings, or string matching, i.e. "find and replace"-like operations. Regular expression processors are found in several search engines, search and replace dialogs of several word processors and text editors, and in the command lines of text processing utilities, such as sed and AWK. Many programming languages provide regular expression capabilities, some built-in, for example Perl, JavaScript, Ruby, AWK, and Tcl, and others via a standard library, for example .NET languages, Java, Python and C++ (since C++11). Most other languages offer regular expressions via a library.