iframe 自适应高度js

iframe 自适应高度

<script>
function calcPageHeight(doc) {
var cHeight = Math.max(doc.body.clientHeight, doc.documentElement.clientHeight);
var sHeight = Math.max(doc.body.scrollHeight, doc.documentElement.scrollHeight);
var height = Math.max(cHeight, sHeight);
return height;
}
var ifr = document.getElementById('iframepage');
ifr.onload = function() {
var iDoc = ifr.contentDocument || ifr.document;
var height = calcPageHeight(iDoc);
ifr.style.height = height + 'px';
}
</script>

放在body最后，document.getElementById()需改