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postMessage.html
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postMessage.html
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<!doctype html>
<html>
<head>
<title>window postMessage</title>
<body>
<h1>Ask the 8-Ball</h1>
<iframe src="http://dhtmlkitchen.com/jstest/postMessage/receiver.html" id="iframe"
style="width: 90%; height: 10em;"></iframe>
<form id="posterForm">
<textarea id="msg" placeholder="Ask the 8 ball" cols="30" rows="5"></textarea>
<input type="submit">
<pre id="responseMessage">-</pre>
</form>
<script type="text/javascript">
window.onload = function() {
var DOMAIN_RECEIVER = "http://dhtmlkitchen.com",
win = document.getElementById("iframe").contentWindow,
responseMessage = document.getElementById("responseMessage"),
form = document.getElementById("posterForm").onsubmit = postDataToWin;
function postDataToWin(ev){
win.postMessage(
document.getElementById("msg").value,
DOMAIN_RECEIVER
);
return false;
}
// Listen for message back from dhtmlkitchen.
addCallback(self, "message", messageReceivedBackHandler);
function messageReceivedBackHandler(ev) {
ev = ev || self.event;
var ACCEPT_DOMAIN = "http://dhtmlkitchen.com",
origin = ev.origin,
messageEl = document.getElementById("m");
// Allow only accepted domain.
if(origin !== ACCEPT_DOMAIN) {
return;
}
responseMessage.firstChild.data = ev.data;
}
function addCallback(o, type, cb){
if(o.addEventListener) {
o.addEventListener(type, cb, false);
} else {
o.attachEvent("on" + type, cb);
}
}
};
</script>
</body>
</html>