JSFiddle - React, Tailwind, and code Playground

by slace

HTML

<a href="">abcdefg</a>
<a href="">fffabc</a>

JavaScript

$.expr[':'].abc = function(o) {
    var regex = /^abc/;

    return o.innerHTML && regex.test(o.innerHTML);
};

console.log($('a:abc').length);