class add in jquery code example

Example 1: jquery addclass

$("#elem").addClass("classname");

Example 2: jquery add class

if ($( "#foo" ).hasClass('className')) {
	$( "#foo" ).removeClass( 'className');
} else {
  $( "#foo" ).addClass( 'className');
}

Example 3: addclass jquery

$( "p" ).addClass( "myClass yourClass" );

Example 4: javascript add class to element

var someElement= document.getElementById("myElement");
    someElement.className += " newclass";//add "newclass" to element (space in front is important)