Question

I need to select links with a specific format of URLs. Can I use sizzle to evaluate a link’s href attribute against a regular expression?

For example, can I do something like this:

var arrayOfLinks = Sizzle('a[HREF=[0-9]+$]');

to create an array of all links on the page whose URL ends in a number?

Answer 1

Give this a try. I’ve attempted to convert the jQuery regex selector that Kobi linked to into a Sizzle selector extension. Seems to work, but I haven’t put it through a lot of testing.

Sizzle.selectors.filters.regex = function(elem, i, match){ 
    var matchParams = match[3].split(',', 2);
    var attr = matchParams[0];
    var pattern = matchParams[1];
    var regex = new RegExp(pattern.replace(/^\s+|\s+$/g,''), 'ig');
    return regex.test(elem.getAttribute(attr));
};

In this case, your example would be written as:

var arrayOfLinks = Sizzle('a:regex(href,[0-9]+$)');