/* 像PHP的 $_GET['arg'] 那样获得地址栏GET参数 */ function getArgs() {     var args = {};     var query = location.search.substring(1); // Get query string     var pairs = query.split("&");                    // Break at ampersand      for(var i = 0; i < pairs.length; i++) {             var pos = pairs[i].indexOf('=');              // Look for "name=value"             if (pos == -1) continue;  // If not found, skip                var argname = pairs[i].substring(0,pos); // Extract the name                var value = pairs[i].substring(pos+1); // Extract the value                value = decodeURIComponent(value); // Decode it, if needed                args[argname] = value;  // Store as a property         }     return args; // Return the object           } /* 使用方法 */ /* URL： http://www.baidu.com?user=funsion&age=26 */ alert( getArgs()['user'] );  // 输出 funsion alert( getArgs()['age'] );  // 输出 26