JQuery advanced
1. Animation
1. Three ways to show and hide elements
1.默认显示和隐藏方式
1. show([speed, [easing],[fn]])
2. hide([speed,[easing],[fn]])
3. toggle([speed], [easing],[fn])
2. Slide to show and hide
1. slideDown([speed], [easing],[fn])
2. slideUp([speed,[easing],[fn]])
3. slideToggle([speed],[easing],[fn])
3. Fade in and fade out display and hide methods
1. fade[In([speed], [easing],[fn])
2. fadeQut([speed],[easing],[fn])
3. fadeToggle([speed, [easing],[fn]])