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Get query string value using JavaScript
Description This is simple codesnippet to get query string value in JS.   No. of Views     10474
  Rating     0
Author Ferhan Siddiqui   Posted On     15 Aug 2011
Tags ASP.NET,Java Script    

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Get query string value using JavaScript

Here is the JavaScript function getQuerystring which finds the key form query string and returns the value.


* <summary>
* Get the querystring value
* </summary>
* <param name="key">A string contains the querystring key</param>
* <param name="defaultVal">Object which get returns when there is not key</param>

function getQuerystring(key, defaultVal) {
    if (defaultVal == null) {
        defaultVal = "";
    key = key.replace(/[\[]/, "\\\[").replace(/[\]]/, "\\\]");
    var regex = new RegExp("[\\?&]" + key + "=([^&#]*)");
    var qs = regex.exec(window.location.href);
    if (qs == null) {
        return defaultVal;
    else {
        return qs[1];


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About Author I m a software developer having more than 3.5+ years experience. Ferhan
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