我可以建立一个链接1.离开页面浏览并执行2. Javascript吗？

Question

I have a piece of javascript code that I want to execute on the page a user navigates to. So I have

<a href="www.google.com">

and once he clicks it I want to execute

javascript:Alert("you're on google")

Is there anyway to do this?

I thought of setting up a PHP page somewhere that accepts a URL as a parameter and then wraps the js in it, but that would affect my webserver traffic and probably not work for session based websites...

Answer 1

You can for sure execute a script * then * navigate away . But if you want to execute your script on the next page, in short , it is not possible (or all browsers try their best to make it not possible). This is related to cross-page security.

<a onclick="yourscript()" href="http://www.google.com">go to google</a>

If you are thinking about cross-domain scripting, you can google for

cross domain scripting

or cross domain ajax etc

Answer 2

Thankfully, no. Or, at least, you are not supposed to be able to do that. Running your javascript on someone else's web site is a gigantic security hole.