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27 lines
575 B
HTML
27 lines
575 B
HTML
<!DOCTYPE HTML>
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<html>
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<body>
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<script type="application/javascript">
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function ok(what, msg) {
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window.parent.postMessage({type: what ? 'OK' : 'KO', msg: msg }, '*');
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}
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window.addEventListener('message', receiveMessage, false);
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function receiveMessage(evt) {
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ok(evt.ports.length == 1, "Port transferred!");
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var a = new MessageChannel();
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ok(a, "MessageChannel created");
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evt.ports[0].postMessage('hello world!', [a.port2]);
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a.port1.onmessage = function(evt) {
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evt.target.postMessage(evt.data);
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}
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}
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</script>
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</body>
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</html>
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