摘要：
有时候需要获取页面的键盘值过滤，需要用到keycode如下 keycode 0 = keycode 1 = keycode 2 = keycode 3 = keycode 4 = keycode 5 = keycode 6 = keycode 7 = keycode 8 = BackSpace BackSpace keycode 9 = Tab Tab keycode 10 = keycode 11 = keycode 12 = Clear keycode 13 = Enter keycode 14 = keycode 15 = keycode 16 = Shift_L keycode 17 阅读全文
