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irisli/child.html

Last active June 28, 2016 18:41
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Iframe height sync
Raw
child.html
<html>
<head>
<!-- MAKE SURE THERE IS 0 PADDING OUTSIDE OF resizeWrapper-->
<style>
body, html {
padding: 0;
margin: 0;
}
</style>
</head>
<body>
<div id="resizeWrapper">
<!-- Content goes inside this div -->
</div>
</body>
<script>
;(function() {
var wrapper = document.getElementById('resizeWrapper');
window.postWindowSize = function() {
parent.postMessage({
FRAMERESIZER: true,
contentHeight: wrapper.offsetHeight,
}, '*')
};
setInterval(window.postWindowSize, 100);
})();
</script>
</html>
Raw
parent.html
<iframe src="DESTINATION" id="childFrame"></iframe>
<script>
var childFrame = document.getElementById('childFrame');
window.addEventListener('message', function(event) {
if (!event.data.FRAMERESIZER) { return; }
document.getElementById('childFrame').style.height = (Math.floor(event.data.contentHeight) + 10) + 'px';
}, false);
</script>
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