ajax returning php/javascript code -

I was playing with AJAX.

If I "helllo" in the PHP file

    
 However, if I do something like this  
  echo "& lt; script language = javascript & gt; alert ('hi'); ";  
 
 In the PHP file,  alert ()  does not occur. 
 
 Does anybody know that I am doing something wrong? 
 
 Example: 
 
 I have found this in my HTML file 
 
   
 
 And I should put the response text above the php file: 
 
  if (req.status == 200) {document.getElementById ('some') InnerHTML = req.responseText }  
 
 If I changed it: 
 
  if (req.status == 200) {document.getElementById ('something'). InnerHTML = "& lt ;? php echo 'hi';? & Gt;"; }  
 
 This works fine, the feedback text will be ---> hi 
 but if I  echo "\" & lt ;? Php echo 'hi' ;; & Gt; \ "";  In my php file, the response text will be "
 
, I hope I explain 
 

and the script will be evaluated.

  $ ("#include"). Load ("request.php");  

Maybe jQuery uses eval () too, so it is not much safer, but until load () only works on that domain, you should have control over those things A Or can be.

However, its use is easy, because you have not purses themselves their own pieces of script :)