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If use following way to get the contentWindow, the value is undefined
<html>
<head>
<title>iframe test</title>
</head>
<body>
<iframe id="frame1" src="frame1.html" name="frame1"></iframe>
<script>
document.body.onload = function() {
console.info("index loaded");
var frame1 = window.frames["frame1"];
console.info(frame1.contentWindow);
}
</script>
</body>
</html>
If use the other way like following, it works fine:
var frame1 = document.getElementById("frame1");
console.info(frame1.contentWindow);
I tested on FF 29.0.1, chrome 34， IE11, they all work the same way.
So I have two questions:
- why the first way can't get contentWindow value
- iframe.contentWindow is compatible in all browser?
is the
contentWindow, it get's a named window, and in your case it's the same thing asFIDDLE