通过onload事件监听实现
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>BFW NEW PAGE</title>
<script id="bfwone" data="dep=jquery.17&err=0" type="text/javascript" src="http://repo.bfw.wiki/bfwrepo/js/bfwone.js"></script>
<script type="text/javascript">
bready(function() {
$("#changebtn").click(function() {
$("#iframetest").attr("src", "http://web.debug.only.bfw.wiki/runcode.php");
});
var iframetest = document.getElementById("iframetest");
if (iframetest.attachEvent) {
//iframetest
bfwposter.attachEvent("onload", function() {
var inframestr = $('#iframetest').contents().find('body').html();
alert(inframestr);
});
} else {
// ff, chrome
iframetest.onload = function() {
var inframestr = $('#iframetest').contents().find('body').html();
alert(inframestr);
};
}
});
</script>
<style>
</style>
</head>
<body>
<iframe id="iframetest" src="">
</iframe>
<input type="button" id="changebtn" value="改变inframe值" />
</body>
</html>
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