I have an iframe and I want to set the scroll position to that
<iframe id="quraniframe" width="100%" height="1100px" src="https://quran.com/1?locale=fa" frameborder="0"></iframe>
and this is my JavaScript code's
    $(function() {
        $('#quraniframe').contents().scrollTo(0, 30);
        window.alert("scroll = " + scroll);
})
and this is result in an alert
scroll = undefined
Actually, I use this code to and no effect in iframe content
 
    