在PHP中回显JavaScript

I am trying to get data returned by AJAX after success. But It's returning the whole Javascript which I am echoing in the PHP file. What I really need is just the words which my JS is printing on the page.

Here is the Javascript code -

window.fbAsyncInit = function() {

    FB.init({appId: 'xxxxxxxxxxx', status: true, cookie: true});

    FB.getLoginStatus(function(o) { 
       if (!o && o.status) return;
       if (o.status == 'connected') {
         document.write("connected");
       } else if (o.status == 'not_authorized') {
          document.write("unauthorized");
       } else {
          document.write("loggedOut");
       }
    });

  };

  (function() {
    var e = document.createElement('script'); e.async = true;
    e.src = document.location.protocol +
      '//connect.facebook.net/en_US/all.js';
    document.getElementById('fb-root').appendChild(e);
  }());

I want to compare the returned data (data== connected, not_authorized, loggedOut) and show respective html elements after comparing the returned data with if..else in AJAX success.

I would be thankful if someone helps me out of this problem.

Thank you.

Your question is a little ambiguous and I would suggest posting the entire context.

I'll hazard a guess anyways. It seems as if you are trying to execute the Javascript after a successful AJAX call but in a PHP file. That won't work because JS only executes in a browser context. You can either execute and return plain strings from your PHP or you can use JSONP and the function you have pasted in the callback.