if (!url) url = window.location.href;
name = name.replace(/[\[\]]/g, "\\$&");
var regex = new RegExp("[?&]" + name + "(=([^&-sharp]*)|&|-sharp|$)"),
results = regex.exec(url);
if (!results) return null;
if (!results[2]) return "";
return decodeURIComponent(results[2].replace(/\+/g, " "));
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