1、键盘各按键对应的数字

• keycode 8 = BackSpace
• keycode 9 = Tab
• keycode 12 = Clear
• keycode 13 = Enter
• keycode 16 = Shift
• keycode 17 = Control
• keycode 18 = Alt
• keycode 19 = Pause
• keycode 20 = CapsLock
• keycode 27 = Escape
• keycode 32 = Space
• keycode 33 = Prior
• keycode 34 = Next
• keycode 35 = End
• keycode 36 = Home
• keycode 37 = Left
• keycode 38 = Up
• keycode 39 = Right
• keycode 40 = Down
• keycode 41 = Select
• keycode 42 = Print
• keycode 43 = Execute
• keycode 45 = Insert
• keycode 46 = Delete
• keycode 47 = Help
• keycode 48 = 0
• keycode 49 = 1
• keycode 50 = 2
• keycode 51 = 3
• keycode 52 = 4
• keycode 53 = 5
• keycode 54 = 6
• keycode 55 = 7
• keycode 56 = 8
• keycode 57 = 9
• keycode 65 = A
• keycode 66 = B
• keycode 67 = C
• keycode 68 = D
• keycode 69 = E
• keycode 70 = F
• keycode 71 = G
• keycode 72 = H
• keycode 73 = I
• keycode 74 = J
• keycode 75 = K
• keycode 76 = L
• keycode 77 = M
• keycode 78 = N
• keycode 79 = O
• keycode 80 = P
• keycode 81 = Q
• keycode 82 = R
• keycode 83 = S
• keycode 84 = T
• keycode 85 = U
• keycode 86 = V
• keycode 87 = W
• keycode 88 = X
• keycode 89 = Y
• keycode 90 = Z
• keycode 112 = F1
• keycode 113 = F2
• keycode 114 = F3
• keycode 115 = F4
• keycode 116 = F5
• keycode 117 = F6
• keycode 118 = F7
• keycode 119 = F8
• keycode 120 = F9
• keycode 121 = F10
• keycode 122 = F11
• keycode 123 = F12

2、键盘码使用

2.1、原生js使用

document.onkeyup = function (event) {    var e = event ? event : window.event;    if (e.keyCode == 13) {//旧版火狐、Opera请使用e.which        alert('您按了回车键。');    }};

2.2、jQuery使用

$(document).on('keyup',function(event){    if (event.keyCode == 13) {        alert('您按了回车键。');    }});