#jquery # jQuery/Method/.addClass() - Method to add class value .addClass() You can add class values to selected elements with .addClass() . Grammar .addClass( className ) Enclose class values in double or single quotes. $( 'h1' ).addClass( 'abc' ); You can add multiple values separated by overrides. $( 'h1' ).addClass( 'ab cd ef' ); As the class value is added while the page is loaded, th..