screen change find same name class and addclass in jquery code example
Example 1: jquery remove and add class
$( "#foo" ).toggleClass( 'className', addOrRemoveOptional );
//OR
if ($( "#foo" ).hasClass('className')) {
$( "#foo" ).removeClass( 'className');
} else {
$( "#foo" ).addClass( 'className');
}
Example 2: jquery addclass
$("#elem").addClass("classname");
Example 3: add class jquery
$("#my_id").attr("class", "my_new_class_name");