Get querystring parameter values

getQuerystringValue.js

/*
 By Chris Coyier
 https://css-tricks.com/snippets/javascript/get-url-variables/
 */
 
function getQueryVariable(variable)
{
    var query = window.location.search.substring(1);
    var vars = query.split("&");
    for (var i=0;i<vars.length;i++) {
        var pair = vars[i].split("=");
        if(pair[0] == variable){return pair[1];}
    }
    return(false);
}

/* USAGE
 Example URL:
 http://www.example.com/index.php?id=1&image=awesome.jpg

 Calling getQueryVariable("id") - would return "1".
 Calling getQueryVariable("image") - would return "awesome.jpg".
 */