iframe高度自适应

autoframeheihgt.js

var timer = null;
function autoFrameHeight() {
    timer && clearTimeout(timer);
    var frame = document.getElementById('win');
    var currHeight = 0;
    try {
        if (frame.contentDocument && frame.contentDocument.body.offsetHeight) {
            frame.height = frame.contentDocument.body.offsetHeight;
        } else if (frame.document && frameid.document.body.scrollHeight) {
            frame.height = frame.document.body.scrollHeight;
        }
    } catch (e) {
    } finally {
        timer = setTimeout(autoFrameHeight, 30);
    }
}
autoFrameHeight();