PHP equivalent of $_GET for Javascript
function getQueryVariable(variable,fromSrc) {
fromSrc = fromSrc || false;
if (fromSrc) {
var myScript = document.currentScript;
var query = myScript.src.replace(/^[^\?]+\??/,'');
}
else {
var query = window.location.search.substring(1);
}
var vars = query.split('&');
for (var i = 0; i < vars.length; i++) {
var pair = vars[i].split('=');
if (decodeURIComponent(pair[0]) == variable) {
return decodeURIComponent(pair[1]);
}
}
return null;
}