js 键盘码

键盘各按键对应的数字

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

键盘码使用

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。');
        }
    };

jQuery使用

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