title: How to get value from external website while the value is set by javascript in that site
body: <p>I used to load external website contents (html/json) with JQuery. I also get a proxy PHP page to work with some sites with strict origin policy.</p>
  
  <p>My problem is for some site:
  In their HTML sourcecode:  <code>&lt;span id='target'&gt;0.00&lt;/span&gt;</code></p>
  
  <p>When browse this external page in Chrome: SPAN value is set to <strong>X</strong></p>
  
  <p>I tried direct JQuery $.get/$.ajax and PHP proxy, all value returned is <strong>0</strong>.</p>
  
  <p>Is there any way to get the final value <strong>X</strong>? I understand it's quite impossible since it's hard to emulate the browser action to run remote javascript.</p>
  
  <p>I can test anything in my server so share here if you know any feasible method. Thanks!</p>