表单事件
submit
reset
click
change
focus
blur
input
window事件
load
DomContentLoaded
readyStatechange
unload
beforeunload
resize
scroll
鼠标事件
click
dbclick
mouseover 冒泡
mouseout 冒泡
mousedown
mouseup
contextmenu
mouseenter 不冒泡
mouseleave 不冒泡
mousewheel (FF DOMMouseScroll,DOM3 wheel)
键盘事件
keydown
keyup
keypress