| <!DOCTYPE html> | 
 | <html> | 
 |  <head> | 
 |  <title>EventSource: addEventListener()</title> | 
 |  <script src="/resources/testharness.js"></script> | 
 |  <script src="/resources/testharnessreport.js"></script> | 
 |  </head> | 
 |  <body> | 
 |  <div id="log"></div> | 
 |  <script> | 
 |  var test = async_test() | 
 |  test.step(function() { | 
 |  var source = new EventSource("resources/message.py") | 
 |  source.addEventListener("message", listener, false) | 
 |  }) | 
 |  function listener(e) { | 
 |  test.step(function() { | 
 |  assert_equals("data", e.data) | 
 |  this.close() | 
 |  }, this) | 
 |  test.done() | 
 |  } | 
 |  </script> | 
 |  </body> | 
 | </html> | 
 |  |