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Asked: 2026-05-10T15:58:55+00:00

Suppose I have a simple XHTML document that uses a custom namespace for attributes:

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Suppose I have a simple XHTML document that uses a custom namespace for attributes:

<html xmlns='...' xmlns:custom='http://www.example.com/ns'>     ...     <div class='foo' custom:attr='bla'/>     ... </html>

How do I match each element that has a certain custom attribute using jQuery? Using

$('div[custom:attr]')

does not work. (Tried with Firefox only, so far.)

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1 Answer

  1. jQuery does not support custom namespaces directly, but you can find the divs you are looking for by using filter function.

    // find all divs that have custom:attr $('div').filter(function() { return $(this).attr('custom:attr'); }).each(function() {   // matched a div with custom::attr   $(this).html('I was found.'); });
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