javascript - Get title from IFrame document

Question

This is my code:

<div id="main-content">
    <script>
        document.title = document.getElementById("main-content-iframe").contentDocument.title;
    </script>
    <iframe name="cstage" src="home.html" width="100%" height="100%" id="main-content-iframe" frameborder="0" onload="document.title=parent.frames['cframe'].document.title;">If you're seeing this message, it means IFrames are not supported; Please enable IFrames or upgrade to a compatible browser that supports IFrames.</iframe>
</div>

It's not working, what am I doing wrong?

Answer 1

You need to check that the iframe is loaded.

<div id="main-content">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
    <iframe name="cstage" src="home.html" width="100%" height="100%" id="main-content-iframe" frameborder="0" onload="document.title=parent.frames['cframe'].document.title;">If you're seeing this message, it means IFrames are not supported; Please enable IFrames or upgrade to a compatible browser that supports IFrames.</iframe>
<script>
    $( "iframe" ).on('load',function() {
        document.title = document.getElementById("main-content-iframe").contentDocument.title;
    });
</script>