ID selector Class selector Attribute selector find descendants closest ancestor parent element children collection filter collection

text content html content append element prepend element before element after element remove element clone element

read attribute set attribute remove attribute prop for boolean state data attribute multiple attributes value getter value setter

addClass removeClass toggleClass hasClass css getter css setter multiple CSS properties show and hide

click handler change handler submit handler event delegation preventDefault stopPropagation one-time event custom event

fadeIn fadeOut fadeToggle slideDown slideUp animate properties stop animation promise after effects

$.get $.post $.ajax JSON AJAX headers AJAX timeout AJAX error handler AJAX abort serialize form

$.each $.map $.grep $.extend Deferred Promise chaining document ready plugin pattern