Answers for "if element:visible jquery"

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 is element hidden

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