keycode 8 = backspace 回格
keycode 9 = tab
keycode 12 = clear
keycode 13 = enter 回車
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
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js判定不能輸入某個字母或符號 nkeyd wn if event.keycode 32 return false 字母和數字鍵的鍵碼值 keycode 左側 按鍵鍵碼 按鍵鍵碼 按鍵鍵碼 按鍵鍵碼a65 j74s83 149b66 k75t84 250c67 l76u85 351d68 m77v8...
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功能 按回車鍵enter則相當於backspace 功能 不讓輸入的內容重複，也就是說在輸入時不允許出現重複的字元 功能 不允許按重複的鍵 輸入 鍵 backspace 或 break caps lock del 或 delete 或 向下鍵 end enter 或 esc help home in...