iframe_broadcastchannel.html

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<!DOCTYPE HTML>

<html>

<body>

  <script type="application/javascript">

function is(a, b, msg) {

  ok(a == b, msg);

function ok(a, msg) {

  window.parent.postMessage({ status: a ? "OK" : "KO", message: msg }, "*");

ok("BroadcastChannel" in window, "BroadcastChannel exists");

var bc = new BroadcastChannel("foobar");

ok(bc, "BroadcastChannel can be created");

is(bc.name, "foobar", "BroadcastChannel.name is foobar");

ok("postMessage" in bc, "BroadcastChannel has postMessage() method");

bc.onmessage = function(evt) {

  ok(evt instanceof MessageEvent, "evt is a MessageEvent");

  is(evt.target, bc, "MessageEvent.target is bc");

  is(evt.target.name, "foobar", "MessageEvent.target.name is foobar");

  is(evt.target.name, bc.name, "MessageEvent.target.name is bc.name");

  is(evt.data, "Hello world from the window!", "Message received from the window");

  bc.postMessage("Hello world from the iframe!");

};

  </script>

</body>

</html>