JSFiddle - React, Tailwind, and code Playground
JavaScript
var tmpl = '<ul><li class="foo">TEST</li></ul><div class="foo">BAR</div>';
console.log( $('.foo', tmpl) ); //[<li class="foo">TEST</li>]
console.log( $(tmpl).find('.foo') ); //[<li class="foo">TEST</li>]
console.log( $(tmpl).filter('.foo') ); //[<div class="foo">BAR</div>]
//Why aren't both elements being matched?