postMessage_target_source.htm (554B)
1 <!DOCTYPE html> 2 <title> postMessage(): target port and source port </title> 3 <script src="/resources/testharness.js"></script> 4 <script src="/resources/testharnessreport.js"></script> 5 <div id=log></div> 6 <script> 7 async_test(function(t) { 8 var channel = new MessageChannel(); 9 var source = channel.port1; 10 var target = channel.port2; 11 target.start(); 12 target.addEventListener("message", t.step_func_done(function(e) { 13 assert_equals(e.target, target); 14 assert_not_equals(e.target, source); 15 }), true); 16 source.postMessage("ping"); 17 }); 18 </script>