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点击键盘的回车键，进行登录
function keydown(e) { var currKey=0,e=e||event; if(e.keyCode==13){ var form=document.getElementById("loginForm"); //表单id form.action="login.action"; form.submit(); } } document.onkeydown=keydown;
keycode对照表
keycode 8 = BackSpace 回格 keycode 9 = Tab keycode 12 = Clear keycode 13 = Enter 回车 keycode 16 = Shift_L keycode 17 = Control_L keycode 18 = Alt_L keycode 19 = Pause keycode 20 = Caps_Lock 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 equal braceright keycode 49 = 1 exclam onesuperior keycode 50 = 2 quotedbl twosuperior keycode 51 = 3 section threesuperior keycode 52 = 4 dollar keycode 53 = 5 percent keycode 54 = 6 ampersand keycode 55 = 7 slash braceleft keycode 56 = 8 parenleft bracketleft keycode 57 = 9 parenright bracketright keycode 65 = a A keycode 66 = b B keycode 67 = c C keycode 68 = d D keycode 69 = e E EuroSign keycode 70 = f F keycode 71 = g G keycode 72 = h H keycode 73 = i I keycode 74 = j J keycode 75 = k K keycode 76 = l L keycode 77 = m M mu keycode 78 = n N keycode 79 = o O keycode 80 = p P keycode 81 = q Q at keycode 82 = r R keycode 83 = s S keycode 84 = t T keycode 85 = u U keycode 86 = v V keycode 87 = w W
