JQuery selector regular expressions

<div class="asdf">

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

<div id="abcd"></div>
<div id="abccd"></div>
<div id="abcccd"></div>
<div id="abd"></div>

$('div')
    .filter(function() {
        return this.id.match(/abc+d/);
    })
    .html("Matched!")
;

$("input[name='option[colour]'] :checked ")