全量事件监听
全量事件监听2
keydown
keydownPreventDeafult
keyup
keypress
change
input
inputPreventDefault
inputReturn
beforeinput
beforeinputPreventDefault
afterinput
compositionstart
compositionupdate
compositionend
change-focus-blur-input
composition
change-focus-blur-compositionend-input
input-composition-filter
实现方案1
实现方案2