บางครั้งจำเป็นจะต้องดักจับการกดปุ่มแป้นพิพม์ และการดักจับนั้นจำเป็นที่จะต้องรู้จัก รหัสตัวเลข ACSII ของแต่ละปุ่มในแป้นพิพม์ เพื่อที่สามารถดักจับได้ถูกต้อง โดยเอารหัสตัวเลข ACSII ไปเปรียบเทียบ Event ใน Java Script
17 = Ctrl | 09 = Tab | 11 = Home | 13 = Enter |
32 = Space Bar | 33 = ! | 34 = “ | 35 = # |
36 = $ | 37 = % | 38 = & | 39 = ‘ |
40 = ( | 41 = ) | 42 = * | 43 = + |
44 = , | 45 = – | 46 = . | 47 = / |
48 = 0 | 49 = 1 | 50 = 2 | 51 = 3 |
52 = 4 | 53 = 5 | 54 = 6 | 55 = 7 |
56 = 8 | 57 = 9 | 58 = : | 59 = ; |
60 = < | 61 = = | 62 = > | 63 = ? |
64 = @ | 65 = A | 66 = B | 67 = C |
68 = D | 69 = E | 70 = F | 71 = G |
72 = H | 73 = I | 74 = J | 75 = K |
76 = L | 77 = M | 78 = N | 79 = O |
80 = P | 81 = Q | 82 = R | 83 = S |
84 = T | 85 = U | 86 = V | 87 = W |
88 = X | 89 = Y | 90 = Z | 91 = [ |
92 = | 93 = ] | 94 = ^ | 95 = – |
96 = ` | 97 = a | 98 = b | 99 = c |
100 = d | 101 = e | 102 = f | 103 = g |
104 = h | 105 = i | 106 = j | 107 = k |
108 = l | 109 = m | 110 = n | 111 = o |
112 = p | 113 = q | 114 = r | 115 = s |
116 = t | 117 = u | 118 = v | 119 = w |
120 = x | 121 = y | 122 = z | 123 = { |
124 = | | 125 = } | 126 = ~ |
ปล. ที่มา http://www.meelink.com/webboard/data/3/0097-1.html