rauschma/iframe_test.html

## iframe_test.html
<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <title>instanceof test</title>
    <script>
        // test() is called from the iframe
        function test(arr) {
            var iframeWin = frames[0];
            console.log(arr instanceof Array); // false
            console.log(arr instanceof iframeWin.Array); // true
            console.log(Array.isArray(arr)); // true
        }
        window.onload = function () {
            var iframeWin = frames[0];
            iframeWin.document.write("<script>window.parent.test([])</"+"script>");
        }
    </script>
</head>
<body>
    <iframe></iframe>
</body>
</html>
	<!DOCTYPE html>
	<html>
	<head>
	<meta charset="UTF-8">
	<title>instanceof test</title>
	<script>
	// test() is called from the iframe
	function test(arr) {
	var iframeWin = frames[0];
	console.log(arr instanceof Array); // false
	console.log(arr instanceof iframeWin.Array); // true
	console.log(Array.isArray(arr)); // true
	}
	window.onload = function () {
	var iframeWin = frames[0];
	iframeWin.document.write("<script>window.parent.test([])</"+"script>");
	}
	</script>
	</head>
	<body>
	<iframe></iframe>
	</body>
	</html>