Read ID from QueryString with jQuery

Question

I want to read an ID from a QueryString with jQuery; how can I do it in an efficient way?

Is there any way similar to $.QueryString?

*"Is there any way like $.QueryString etc"* There can be, you just haven't created it yet. There's nothing built into jquery that will do it. — Kevin B, Feb 07 '14 at 20:33
@RocketHazmat myURL?id=123 how can I get 123 with Jquery ??? — dnxit, Feb 07 '14 at 20:37
@KevinB, Its [this](http://darlesson.com/jquery/querystring) plugin — Satpal, Feb 07 '14 at 20:39
@Satpal i'm assuming that the OP has no knowledge that the plugin exists, and it's just coincidence that he named it correctly. :p — Kevin B, Feb 07 '14 at 20:42

score 2 · Answer 1 · answered Feb 07 '14 at 20:40

I use this, no extra library required:

//
// Given a parameter name, returns the corresponding querystring parameter.
//
function getParameterByName(name) {
    name = name.replace(/[\[]/, "\\\[").replace(/[\]]/, "\\\]");
    var regexS = "[\\?&]" + name + "=([^&#]*)";
    var regex = new RegExp(regexS);
    var results = regex.exec(window.location.search);
    if (results == null)
        return "";
    else
        return decodeURIComponent(results[1].replace(/\+/g, " "));
}

Sample usage:

Id = parseInt(getParameterByName("id")) || 0;

score 1 · Answer 2 · answered Feb 07 '14 at 20:36

1

Assuming you are using jQuery - Querystring library

 var id = $.QueryString("paramter");

Note: it will return null is the query string doesn't exist or the value of the query string if it exists

answered Feb 07 '14 at 20:36

Satpal

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score 0 · Accepted Answer · answered Feb 07 '14 at 20:45

Well I found this it might be helpful for someone

(function ($) {
$.QueryString = (function (a) {
    if (a == "") return {};
    var b = {};
    for (var i = 0; i < a.length; ++i) {
        var p = a[i].split('=');
        if (p.length != 2) continue;
        b[p[0]] = decodeURIComponent(p[1].replace(/\+/g, " "));
    }
    return b;
})(window.location.search.substr(1).split('&'))
})(jQuery);

var id = $.QueryString["id"];

Read ID from QueryString with jQuery

3 Answers3