www.mywebsite.com/?foo=bar
How can I get the value of foo into a Javascript variable?
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4 Answers
You don't even need PHP for that. Basically, you can parse window.location.href to get the value of a GET URL parameter into a JavaScript variable.
There is plenty of code online, you can use for example this:
function getUrlParameter( name )
{
name = name.replace(/[\[]/,"\\\[").replace(/[\]]/,"\\\]");
var regexS = "[\\?&]"+name+"=([^&#]*)";
var regex = new RegExp( regexS );
var results = regex.exec( window.location.href );
if( results == null )
return "";
else
return results[1];
}
To get the value of foo, just call getUrlParameter("foo") in your JavaScript code.
2 Comments
cwallenpoole
gup? really? Come on. Descriptive function names!
houbysoft
Changed, although the code is taken from the link, so the name wasn't mine :)
You can parse the window.location.search string for query variables.
https://developer.mozilla.org/en/DOM/window.location
For example
var query = window.location.search.substring(1);
var pairs = query.split('&');
var _get = {};
for (var i = 0; i < pairs.length; i++) {
var pair = pairs[i].split('=');
_get[pair[0]] = pair[1];
}
Comments
I did some googling and here is a link for you http://www.zrinity.com/developers/code_samples/code.cfm/CodeID/59/JavaScript/Get_Query_String_variables_in_JavaScript
Comments
You can try this
function getUrlVars()
{
var vars = [], hash;
var hashes = window.location.href.slice(window.location.href.indexOf('?') + 1).split('&');
for(var i = 0; i < hashes.length; i++)
{
hash = hashes[i].split('=');
vars.push(hash[0]);
vars[hash[0]] = hash[1];
}
return vars;
}
EDIT
The above will parse the URL and give you the parameters as an associative array. You can also try
function getURLVars(name) {
return decodeURI(
(RegExp(name + '=' + '(.+?)(&|$)').exec(location.search)||[,null])[1]
);
}
In this if you want the value of foo, call this with getUrlVars('foo')
Comments
