Question

172

How can I detect a Scrollbar presence ( using Javascript ) in HTML iFrame?

rated 0 times [ 179] [ 7] / answers: 1 / hits: 47640 / 16 Years ago, wed, march 25, 2009, 12:00:00

How can I detect a Scrollbar presence ( using Javascript ) in HTML iFrame ?

I have already tried :

        var vHeight = 0;

        if (document.all) {

          if (document.documentElement) {

            vHeight = document.documentElement.clientHeight;

          } else {

            vHeight = document.body.clientHeight

          }

    } else {

      vHeight = window.innerHeight;

    }



    if (document.body.offsetHeight > vHeight) {

      //when theres a scrollbar

    }else{

      //when theres not a scrollbar

    }

And I also had tried :

           this.scrollLeft=1;

    if (this.scrollLeft>0) {

        //when theres a scrollbar

        this.scrollLeft=0;

        }else{

        //when theres not a scrollbar

        return false;

    }

With no success..

I have searched the javascript objets on DOM Inspector, but didn't find anything.

Is is possible to detect a scrollbar presence in a iframe in javacscript ?

The iframe content comes from the same domain.

No success until now..

alt text http://www.upvtp.com.br/file.php/1/help_key.jpg

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viridianaw

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3 Years ago

answered 16 Years ago jonrened · Accepted Answer

Using jQuery you can compare the document height, the scrollTop position and the viewport height, which might get you the answer you require.

Something along the lines of:

$(window).scroll(function(){

  if(isMyStuffScrolling()){

    //There is a scroll bar here!

  }

}); 



function isMyStuffScrolling() {

  var docHeight = $(document).height();

  var scroll    = $(window).height() + $(window).scrollTop();

  return (docHeight == scroll);

}