Keyboard ASCII code Query

Keyboard ASCII code Query

You can consider the ASCII code of F1 -- F12 in this way. The ASCII code of F1 is: 112, and then the ASCII code table of F2 -- F12 is obtained in turn. Example: Function document. onkeydown () { If (event. keycode = '68 ') { Alert ('the d key you entered on the keyboard '); } }   Function document. onkeypress () { If (event. keycode = '43 ') { Alert ('+ "key you have entered the keyboard '); } } JS shield combinationFunction key Blocked key combination Ctrl + n <Script language =Javascript> Function keydown (){ If (window. event. altkey )&& (Window. event. keycode = 37) | // mask Alt + direction key seek (Window. event. keycode = 39) {// mask Alt + direction key → Alert ("You are not allowed to use Alt + arrow keys to move forward or backward the webpage! "); Event. returnvalue = false; } If (event. keycode = 8) | // shield the unregeed deletion key (Event. keycode = 116) {// block the F5 refresh key Event. keycode = 0; Event. returnvalue = false; } If (event. ctrlkey) & (event. keycode = 78) {// block Ctrl + n Event. returnvalue = false; } If (event. shiftkey) & (event. keycode = 121) {// block SHIFT + F10 Event. returnvalue = false; } If (event. keycode = 122) {// block F11 Event. returnvalue = false; } } ASC code ASCII code Keyboard ASCII code Keyboard ASCII code Keyboard ASCII code Keyboard 27 ESC 32 Space 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 ~   Example: Function document. onkeydown () { If (event. keycode = '68 ') { Alert ('the d key you entered on the keyboard '); } }