jQuery.com youmightnotneedjquery.com include jQuery on webpage - cdnjs jquery 1. selector $() - css style selector: "img", ".class", "#id", and "li a" - result is a collection: access element: $("img:first"), $("img:nth-child(3)") .css() 2. methods http://api.jquery.com .text() .html() .attr() type: text, color, ... .val() .addClass(), .removeClass(), toggleClass() 3. effects .fadeOut() .fadeIn() .fadeToggle() .slideDown() .slideUp() .slideToggle() 4. events .click() .keypress() .on() 5. ajax .get() .getJSON() .load() .post() // https://api.github.com/zen