Checking visibility of an element

Question

I want to check if an element is visible and if yes, I want to scroll down to it. I am trying to achieve that with the following jquery:

var j = jQuery.noConflict();

  jQuery(document).ready(function($) {
    if(j('#element').css('display') == 'block'){
        j('body').scrollTo('#target');
      };
});

but it does not work.

Answer 1

// jQuery no conflict mode
var j = $.noConflict();

// retain meaning of jQuery's handle (optional but makes it
// sometimes easier if you don't use one-letter assignments
// of jQuery)
(function($){

  // document read
  $(function(){
    // if element is visible (a visible #element was found)
    if $('#element:visible').size() > 0){
      // scroll to #target
      $('body').scrollTo('#target');
    }
  });

})(j);

:visible makes it easier. You're can't just test against display=='block', you'd also have to test for inline-block and others in addition to checking the visibility setting. For example, the element could have display:block:visibility:hidden which doesn't make it :visible.