Untitled
2 months ago in Plain Text
<!doctype html>
<html>

<head>
<meta charset="UTF-8">
</head>

<body>

<form id="form">
<input type="text" placeholder="Enter message" name="message">
<input type="submit" value="Click to send">
</form>

<script>
form.onsubmit = function() {
window.parent.postMessage(this.message.value, '*');
return false;
};
</script>

</body>
</html>
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