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1

Possible Duplicate:
Use the get paramater of the url in javascript
Get query string values in JavaScript

In Javascript, how can I get the parameters of a URL string (not the current URL)?

like:

www.domain.com/?v=123&p=hello

Can I get "v" and "p" in a JSON object?

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marked as duplicate by Jared Farrish, Quentin, graphicdivine, derobert, Graviton Dec 14 '11 at 6:45

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.
1  
You can check out this post on the matter stackoverflow.com/questions/901115/… –  Erik Nordenhök Dec 13 '11 at 8:19
    
Here's a nice little snippet. –  Purag Dec 13 '11 at 8:24

3 Answers 3

up vote 7 down vote accepted 
function getJsonFromUrl() {
  var query = location.search.substr(1);
  var data = query.split("&");
  var result = {};
  for(var i=0; i<data.length; i++) {
    var item = data[i].split("=");
    result[item[0]] = item[1];
  }
  return result;
}

As ricosrealm suggests, the values should be url decoded. Additionally, today (2.5 years after this answer) you can safely use Array.forEach:

function getJsonFromUrl() {
  var query = location.search.substr(1);
  var result = {};
  query.split("&").forEach(function(part) {
    var item = part.split("=");
    result[item[0]] = decodeURIComponent(item[1]);
  });
  return result;
}
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4  
Each item should be url decoded using decodeURIComponent() –  ricosrealm Jan 17 at 0:40
up vote 1 down vote

You could get a JavaScript object (a map) of the parameters with something like this:

var regex = /[?&]([^=#]+)=([^&#]*)/g,
    url = window.location.href,
    params = {},
    match;
while(match = regex.exec(url)) {
    params[match[1]] = match[2];
}

The regular expression could quite likely be improved. It simply looks for name-value pairs, separated by = characters, and pairs themselves separated by & characters (or an = character for the first one). For your example, the above would result in:

{v: "123", p: "hello"}

Here's a working example.

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why not use window.location.getParameter? –  codeAnand Dec 13 '11 at 8:28
    
Your example does not return an object (it returns 2 strings), and it requires you to know the names of the parameters beforehand, which given what the OP is trying to do, is unlikely to be the case. Also, where is the documentation for getParameter? –  James Allardice Dec 13 '11 at 8:33
up vote -6 down vote 
var v = window.location.getParameter('v');
var p = window.location.getParameter('p');

now v and p are objects which have 123 and hello in them respectively

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4  
No such method in the spec. –  katspaugh Dec 13 '11 at 8:37

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