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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Inner document</title>
</head>
<body>
<h1>Inner</h1>
<input type="text">
<script>
window.onmessage = function(e) {
if (e.data == "getlog") {
parent.postMessage(log, "*");
}
};
let log = "log:";
let input = document.getElementsByTagName("input")[0];
input.onfocus = function() {
log += "inputfocus,"
}
input.onblur = function() {
log += "inputblur,"
}
document.body.onfocus = function() {
log += "bodyfocus,"
}
document.body.onblur = function() {
log += "bodyblur,"
}
window.onload = function() {
log += "willfocusinput,"
input.focus();
log += "didfocusinput,"
parent.postMessage("start", "*");
}
</script>
</body>
</html>
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