javascript

lib.js

// 1. 按名字取得网址中的query string
function getParameterByName(name) {
    name = name.replace(/[\[]/, "\\\[").replace(/[\]]/, "\\\]");
    var regex = new RegExp("[\\?&]" + name + "=([^&#]*)"),
        results = regex.exec(location.search);
    return results == null ? "" : decodeURIComponent(results[1].replace(/\+/g, " "));
}

// example
// current URL: http: //www.test.com/index.php?name=John
getParameterByName('name') retrun 'John'.