JQuery: How To Get URL Parameters & Values

While developing on a Drupal website, I was using the URLFill module to automatically fill in the form fields with some GET variables in the URL (something like http://example.com?var1=value1&var2=value2). For some reason it is not filling-up a Content Taxonomy field where the widget is set as autocomplete. So what I did was to implement the auto-filling of the said field with JQuery. This was the function I used:

$.extend({
  getUrlVars: function(){
    var vars = [], hash;
    var hashes = window.location.href.slice(window.location.href.indexOf('?') + 1).split('&');
    for(var i = 0; i < hashes.length; i++)
    {
      hash = hashes[i].split('=');
      vars.push(hash[0]);
      vars[hash[0]] = hash[1];
    }
    return vars;
  },
  getUrlVar: function(name){
    return $.getUrlVars()[name];
  }
});

Calling getUrlVars() function would return you the following array:

{
    "me"    : "myValue",
    "name2" : "SomeOtherValue"
}

Typical usage is as follows:

// Get object of URL parameters
var allVars = $.getUrlVars();

// Getting URL var by its nam
var byName = $.getUrlVar('name');

Source: http://jquery-howto.blogspot.com/2009/09/get-url-parameters-values-with-jquery.html