How can I get URI parameters - query string with JavaScript?

Question

I am new at using javascript. For example, I have following url: index.jsp?page=home&lang=eng how can I extract parameters home and eng from the above url?

Question also answered: How can I get query string values in JavaScript?

why would you need ajax for that..? Or did i get you wrong..! — Sudhir Bastakoti, Mar 08 '13 at 09:06
I think he means JavaScript. Some people use that term interchangeably..... — Amy, Mar 08 '13 at 09:11
I can get parameters by using request.getParameter() with java but I want to do that with jquery — Afsun Khammadli, Mar 08 '13 at 09:11
possible duplicate of [How can I get query string values?](http://stackoverflow.com/questions/901115/how-can-i-get-query-string-values) — JJJ, Mar 08 '13 at 09:12

score 3 · Accepted Answer · answered Mar 08 '13 at 09:18

To parse an url's parameters:

var url = 'index.jsp?page=home&lang=eng';

var parse = function (url) {
    var getQuery = url.substring(url.indexOf('?') + 1);
    var parts = getQuery.split('&');
    var key = null;
    var value = null;
    var result = {};
    for (var i = 0; i < parts.length; i++) {
        var keyValue = parts[i].split('=');
        key = keyValue[0];
        value = keyValue[1];
        result[key] = value;
    }
    return result;
};

The output of parse(url) would be an object that has the following structure:

{
    page: "home",
    lang: "eng"
}

score 1 · Answer 2 · answered Apr 28 '15 at 13:04

Easy way to extract the exact URL param you want and will return "" empty string when can't find the paramter you search for:

function getUrlParam(param){
 var value = decodeURIComponent(
  (RegExp(param + '=' + '(.+?)(&|$)').exec(location.search)||["",""])[1]);
 return value;
} 

page_value = getUrlParam("page");    // home
lang_value = getUrlParam("lang");    // eng

How can I get URI parameters - query string with JavaScript?

2 Answers2