Answers for "jquery if not has class"

if a class exists jquery

if ($(".mydivclass").length){
    // Do something if class exists
} else {
    // Do something if class does not exist
}

jquery check if a class exists

if ($(".mydivclass")[0]){
    // Do something if class exists
} else {
    // Do something if class does not exist
}

jQuery check if class contains any element

jQuery(function ($) {
	if ($(".className").length == 0) {
		$(".element").removeAttr("style").hide();
	}else{
		$(".element").removeAttr("style").show();
	}	
});