how to get GET variable's value in javascript? [duplicate]

Answer 1

var $_GET = {};
if(document.location.toString().indexOf('?') !== -1) {
    var query = document.location
                   .toString()
                   // get the query string
                   .replace(/^.*?\?/, '')
                   // and remove any existing hash string (thanks, @vrijdenker)
                   .replace(/#.*$/, '')
                   .split('&');

    for(var i=0, l=query.length; i