var url = location.href;
//获取keyword的参数值
var es=/keyword=/;
es.exec(url);
var result=RegExp.rightContext;
例如：
var url = location.href;
//获取pid的参数值
var es=/pid=/;
es.exec(url);
var pid=RegExp.rightContext;
var aurl = "&pid="+pid;
alert(pid);//结果：&pid=37
![[Web front-end] Démarrage rapide de Node.js](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
