JSFiddle - React, Tailwind, and code Playground

HTML

<a href="#?acckey={{user.key()}}" class="generate_url">Get URL</a>

JavaScript

function getParameterByName(query_string, name) {
    name = name.replace(/[\[]/, "\\\[").replace(/[\]]/, "\\\]");
    var regexS = "[\\?&]" + name + "=([^&#]*)";
    var regex = new RegExp(regexS);
    var results = regex.exec(query_string);
    if (results == null) return "";
    else return decodeURIComponent(results[1].replace(/\+/g, " "));
}

$(".generate_url").click(function() {
    var query_string = this.href.substring(this.href.indexOf("?"));
    var acckey = getParameterByName(query_string, "acckey");
    alert(acckey);
});