How do I determine the state of a toggled element?

Here is the example of toggled element using the  :visible or :hidden selectors.

var vis = $(‘#formdiv’).is(‘:visible’);
var hide= $(‘#formdiv’).is(‘:hidden’);
If you want to show a div visibility,  then there is example for this
For example:

$(‘#formdiv:visible’).animate({left: ‘+=100px’}, ‘slow’);