JavaScript query string


Is there any JavaScript library that makes a dictionary out of the query string, ASP.NET style?

Something which can be used like:

var query = window.location.querystring["query"]?

Is "query string" called something else outside the .NET realm? Why isn't broken into a key/value collection ?

EDIT: I have written my own function, but does any major JavaScript library do this?

Best Solution

You can extract the key/value pairs from the property, this property has the part of the URL that follows the ? symbol, including the ? symbol.

function getQueryString() {
  var result = {}, queryString =,
      re = /([^&=]+)=([^&]*)/g, m;

  while (m = re.exec(queryString)) {
    result[decodeURIComponent(m[1])] = decodeURIComponent(m[2]);

  return result;

// ...
var myParam = getQueryString()["myParam"];