how to add class to html tag using jquery code example

Example 1: jquery add class

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

Example 2: jquery addclass

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

Example 3: jquery addclass

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