Answers for "jquery test if div is visible"

jquery see if element is visible

.is(':visible')
//Selects all elements that are visible.

if($('#yourDiv').is(':visible')){
	//do stuff in here
}
//or
$('#yourDiv:visible').callYourFunction();

jquery how to know if element is visible

// Checks CSS content for display:[none|block], ignores visibility:[true|false]
$(element).is(":visible");

// The same works with hidden
$(element).is(":hidden");