jquery addlcas code example
Example 1: jquery addclass
$("#elem").addClass("classname");
Example 2: how to add class on the base of has class in jquery
$( "ul li" ).addClass(function( index ) {
return "item-" + index;
});
$("#elem").addClass("classname");
$( "ul li" ).addClass(function( index ) {
return "item-" + index;
});