JavaScript query string

tl;dr solution on a single(ish) line of code using vanilla javascript

var queryDict = {}
location.search.substr(1).split("&").forEach(function(item) {
    queryDict[item.split("=")[0]] = item.split("=")[1]
})

For querystring ?a=1&b=2&c=3&d&eit returns:

> queryDict
a: "1"
b: "2"
c: "3"
d: undefined
e: undefined

multi-valued keys and encoded characters?

See the original answer at How can I get query string values in JavaScript?

"?a=1&b=2&c=3&d&e&a=5&a=t%20e%20x%20t&e=http%3A%2F%2Fw3schools.com%2Fmy%20test.asp%3Fname%3Dståle%26car%3Dsaab"
> queryDict
a: ["1", "5", "t e x t"]
b: ["2"]
c: ["3"]
d: [undefined]
e: [undefined, "http://w3schools.com/my test.asp?name=ståle&car=saab"]

Maybe http://plugins.jquery.com/query-object/?

This is the fork of it https://github.com/sousk/jquery.parsequery#readme.

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

function getQueryString() {
  var result = {}, queryString = location.search.slice(1),
      re = /([^&=]+)=([^&]*)/g, m;

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

  return result;
}

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