How can I get query string values in JavaScript?

Question

Ahmed Abouzaid · Answer

You can get query string value by this function.

function getQueryStr(n) {

var query = location.search.split('&'+n+'=')[1];

if (!query) query= location.search.split('?'+n+'=')[1];

return query? decodeURIComponent(query.split('&')[0]):null;

}

Clodelio Delfino · Answer

var urlPath = window.location.pathname.split( '/' );

then just do some string parsing on urlPath variable...

Taha Hanif · Answer

if(!window.location.getParameter ){ window.location.getParameter =function(key){function parseParams(){varparams={}, e, a =/\+/g,// Regex for replacing addition symbol with a space r =/([^&=]+)=?([^&]*)/g, d =function(s){return decodeURIComponent(s.replace(a," "));}, q = window.location.search.substring(1);while(e = r.exec(q))params[d(e[1])]= d(e[2]);returnparams;}if(!this.queryStringParams)this.queryStringParams = parseParams();returnthis.queryStringParams[key];};}

Bowsil Ameen · Answer

Hi Zaid,

Here is the small javascript function which can take variable as parameter

function getQuerystring(key)

{

key = key.replace(/[$$]/,"\\\[").replace(/[$$]/,\\\]);

var regex = new RegExp("[\\?&]"+key+"=([^&#]*)");

var qs = regex.exec(window.location.href);

if(qs == null)

alert("no Q string found...");

else alert(qs[1]);

}

Atif Aqeel · Answer

function getParameterByName(name){ name = name.replace(/[$$]/,"\\\[").replace(/[$$]/,"\\\]");var regex =newRegExp("[\\?&]"+ name +"=([^&#]*)"), results = regex.exec(location.search);return results ==null?"": decodeURIComponent(results[1].replace(/\+/g," "));}

Karthik kumar Ashila · Answer

WE can get string values by using alert box("message")

islam khalil · Answer

var query = window.location.search;

JQUERY:

http://jquery-howto.blogspot.com/2009/09/get-url-parameters-values-with-jquery.html

Google :

function(b){var c =typeof b ==="undefined";if(a !== h && c)return a;for(var d ={}, b = b || k[B][vb], e = b[p]("?"), f = b[p]("#"), b =(f ===-1? b[Ya](e +1):[b[Ya](e +1, f - e -1),"&", b[Ya](f +1)][K](""))[z]("&"), e = i.dd ? ia : unescape, f =0, g = b[w]; f < g;++f){var l = b[f][p]("=");if(l !==-1){var q = b[f][I](0, l), l = b[f][I](l +1), l = l[Ca](/\+/g," ");try{ d[q]= e(l)}catch(A){}}} c &&(a = d);return d }

JS :

function getParameterByName(name){ name = name.replace(/[$$]/,"\\\[").replace(/[$$]/,"\\\]");var regex =newRegExp("[\\?&]"+ name +"=([^&#]*)"), results = regex.exec(location.search);return results ==null?"": decodeURIComponent(results[1].replace(/\+/g," "));}

Sandhya Binoy · Answer

document.write(location.search);

George Dimitrov · Answer

Hello Zaid,

Just split up the parameters into an associative-array style:

var urlParams;

(window.onpopstate = function () {

var match,

pl = /\+/g, // Regex for replacing addition symbol with a space

search = /([^&=]+)=?([^&]*)/g,

decode = function (s) { return decodeURIComponent(s.replace(pl, " ")); },

query = window.location.search.substring(1);

urlParams = {};

while (match = search.exec(query))

urlParams[decode(match[1])] = decode(match[2]);

})();

Example querystring:

?i=somemore&mode=xxxx&sid=123456&enc=+Voala%20&empty

Result:

urlParams = {

enc: "Voala",

i: "somemore",

mode: "xxxx",

sid: "123456",

empty: ""

}

alert(urlParams["mode"]);

// -> "front"

alert("empty" in urlParams);

// -> true

Server-side preprocessing with PHP and native JSON functions.

Muhammad Majid Saleem · Answer

I found a best example for this. Please have a look on following URL:

http://www.darlesson.com/jquery/querystring/?language=en&province=Alberta&province=Ontario&province=Quebec

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