jQuery selector regular expressions

jQuery selector regular expressions

I am after documentation on using wildcard or regular expressions (not sure on the exact terminology) with a jQuery selector.
I have looked for this myself but have been unable to find information on the syntax and how to use it. Does anyone know where the documentation for the syntax is?
EDIT: The attribute filters allow you to select based on patterns of an attribute value.

Solutions/Answers:

Solution 1:

James Padolsey created a wonderful filter that allows regex to be used for selection.

Say you have the following div:

<div class="asdf">

Padolsey’s :regex filter can select it like so:

$("div:regex(class, .*sd.*)")

Also, check the official documentation on selectors.

Solution 2:

You can use the filter function to apply more complicated regex matching.

Here’s an example which would just match the first three divs:

$('div')
  .filter(function() {
    return this.id.match(/abc+d/);
  })
  .html("Matched!");
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>

<div id="abcd">Not matched</div>
<div id="abccd">Not matched</div>
<div id="abcccd">Not matched</div>
<div id="abd">Not matched</div>

Solution 3:

These can be helpful.

If you’re finding by Contains then it’ll be like this

    $("input[id*='DiscountType']").each(function (i, el) {
         //It'll be an array of elements
     });

If you’re finding by Starts With then it’ll be like this

    $("input[id^='DiscountType']").each(function (i, el) {
         //It'll be an array of elements
     });

If you’re finding by Ends With then it’ll be like this

     $("input[id$='DiscountType']").each(function (i, el) {
         //It'll be an array of elements
     });

If you want to select elements which id is not a given string

    $("input[id!='DiscountType']").each(function (i, el) {
         //It'll be an array of elements
     });

If you want to select elements which id contains a given word, delimited by spaces

     $("input[id~='DiscountType']").each(function (i, el) {
         //It'll be an array of elements
     });

If you want to select elements which id is equal to a given string or starting with that string followed by a hyphen

     $("input[id|='DiscountType']").each(function (i, el) {
         //It'll be an array of elements
     });

Solution 4:

If your use of regular expression is limited to test if an attribut start with a certain string, you can use the ^ jquery selector

For example if your want to only select div with id starting with “abc”, you can use $("div[id^='abc']")

A lot of very useful selectors to avoid use of regex can be find here : http://api.jquery.com/category/selectors/attribute-selectors/

Solution 5:

var test = $('#id').attr('value').match(/[^a-z0-9 ]+/);

Here you go!

Solution 6:

ids and classes are still attributes, so you can apply a regexp attribute filter to them if you select accordingly. Read more here:
http://rosshawkins.net/archive/2011/10/14/jquery-wildcard-selectors-some-simple-examples.aspx