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valueof/embed.html

Last active August 29, 2015 14:27
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embed.html
<!doctype html>
<style>body {background-color: red; height: 500px; width: 500px;}</style>
<script>
window.addEventListener('message', function (ev) {
var message = ev.data.split(':')
if (message[0] != 'yo') {
return
}
window.parent.postMessage([
message[1],
document.body.scrollHeight + 'px',
document.body.scrollWidth + 'px'
].join(':'), '*')
})
</script>
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