ThinkPHP's javascript code in the controller cannot be executed.

Thinkphp tutorial webpage special effect code in controller cannot be executed Solution
Take the "exit" option for example.
My "Exit System" link is written to the framework on the left, which is dynamically generated using js. That is to say, the target in the link cannot be specified.

View sourceprint? 1 $ this-> assign ('jumpurl' ,__ url _. '/login'); <br> $ this-> success ("logout successful! "); <Br>

In this way, the page to jump to is displayed in the right frame.
Writing js Code to a url is not acceptable.
I commented out the two lines of code. Direct use

View sourceprint? 1 echo "<script> window. top. location. href = '$ url'; </script> ";

This does not work either. On the one hand, the _ app _ constants cannot be used in the url. On the other hand, the final execution result is to remove the <script> tag and output the rest directly! (Window. top. location. href = 'index/login ';)
I checked the success function in the action class and found no relevant parameters.

 

When I was eating at a friend's house on Sunday, I suddenly thought of a problem. The tags in tp are included in angle brackets (<>, is the <script> I wrote in the Controller parsed as a tag? So I re-wrote the second code:

View sourceprint? 1 echo '<literal> <script> alert ("exited successfully"); top. location. href = "login"; </script> </literal> ';

That's all.