JS Prevent carriage return (enter) key to submit form

How to Prevent carriage return (enter) key to submit a form, in fact very simple, just a word. Onkeydown= "if (event.keycode==13) return false;" Just write this sentence in the from tag.

If you press enter in the page to automatically submit, you can set the return value to prevent auto-commit such as <input id= "q" name= "Q" type= "text" onkeypress= "Javascript:return gosearch ();" > The return value must be false

functionif(window.event.keyCode = =returnfalse;}}

or write directly in the form

<form name= "Form1" action= "action/soft_add_action.php" enctype= "Multipart/form-data" method= "POST" onkeydown= "if (event.keycode==13) return false; "onsubmit=" return Checksubmit (); " >

or refer to the following code:

You can add a form to the "myform.submit ()" function to judge it, just as you would with a normal form, by changing the name of the function.
</body>
Below is a description of Event.keycode in the next JavaScript.
KeyCode 8 = BackSpace BackSpace
KeyCode 9 = Tab tab
KeyCode = Clear
KeyCode = Enter
KeyCode = shift_l
KeyCode = control_l
KeyCode = alt_l
KeyCode = Pause
KeyCode = Caps_lock
KeyCode = Escape escape
KeyCode = Space Space
KeyCode = Prior
KeyCode = Next
KeyCode = End
KeyCode = Home
KeyCode PNs = Left
KeyCode = up
KeyCode = Right
KeyCode = Down
KeyCode = Select
KeyCode = Print
KeyCode = Execute
KeyCode = Insert
KeyCode = Delete
KeyCode = Help
keycode = 0 Equal braceright
keycode = 1 Exclam onesuperior
KeyCode = 2 Quotedbl twosuperior
keycode = 3 section Threesuperior
keycode = 4 Dollar
KeyCode = 5 percent
KeyCode = 6 Ampersand
keycode = 7 Slash braceleft
KeyCode = 8 Parenleft bracketleft
KeyCode = 9 Parenright bracketright
KeyCode = a A
KeyCode = b b
KeyCode = c C
KeyCode = d D
KeyCode = e e eurosign
KeyCode = f F
KeyCode = g g
KeyCode = h H
KeyCode = i I
KeyCode = J J
KeyCode = k K
KeyCode = l l
keycode = M M mu
KeyCode = n N
keycode = o O
KeyCode = P p
KeyCode Bayi = q q at
KeyCode = r R
KeyCode = s S
KeyCode = t T
KeyCode = u u
KeyCode = v V
KeyCode = w W
KeyCode = x x
KeyCode = y y
KeyCode = Z Z
KeyCode = Kp_0 Kp_0
KeyCode = Kp_1 kp_1
KeyCode 98 = kp_2 kp_2
KeyCode = Kp_3 Kp_3
KeyCode = Kp_4 Kp_4
KeyCode 101 = kp_5 Kp_5
KeyCode 102 = Kp_6 Kp_6
KeyCode 103 = kp_7 kp_7
KeyCode 104 = Kp_8 Kp_8
KeyCode = Kp_9 Kp_9
KeyCode 106 = kp_multiply kp_multiply
KeyCode 107 = Kp_add Kp_add
KeyCode 108 = Kp_separator Kp_separator
KeyCode 109 = kp_subtract Kp_subtract
KeyCode = Kp_decimal Kp_decimal
KeyCode 111 = kp_divide Kp_divide
KeyCode = F1
KeyCode 113 = F2
KeyCode = F3
KeyCode = F4
KeyCode = F5
KeyCode 117 = F6
KeyCode 118 = F7
KeyCode 119 = F8
KeyCode = F9
KeyCode 121 = F10
KeyCode 122 = F11
KeyCode 123 = F12
KeyCode 124 = F13
KeyCode = F14
KeyCode 126 = F15
KeyCode 127 = F16
KeyCode = F17
KeyCode 129 = F18
KeyCode = F19
KeyCode 131 = F20
KeyCode = F21
KeyCode 133 = F22
KeyCode 134 = F23
KeyCode 135 = F24
KeyCode 136 = Num_lock
KeyCode 137 = Scroll_lock
KeyCode 187 = Acute grave
KeyCode 188 = Comma semicolon
KeyCode 189 = minus underscore
keycode = Period Colon
KeyCode 192 = numbersign Apostrophe
KeyCode = Plusminus hyphen Macron
KeyCode 211 =
KeyCode 212 = Copyright Registered
KeyCode 213 = Guillemotleft Guillemotright
KeyCode 214 = masculine Ordfeminine
KeyCode 215 = AE AE
KeyCode 216 = cent yen
KeyCode 217 = Questiondown Exclamdown
KeyCode 218 = Onequarter Onehalf threequarters
KeyCode = Less Greater bar
KeyCode 221 = plus asterisk Asciitilde
KeyCode 227 = Multiply Division
KeyCode 228 = Acircumflex Acircumflex
KeyCode 229 = Ecircumflex Ecircumflex
KeyCode = Icircumflex Icircumflex
KeyCode 231 = Ocircumflex Ocircumflex
KeyCode 232 = Ucircumflex Ucircumflex
KeyCode 233 = Ntilde Ntilde
KeyCode 234 = Yacute Yacute
KeyCode 235 = Oslash Ooblique
KeyCode 236 = aring aring
KeyCode 237 = Ccedilla Ccedilla
KeyCode 238 = Thorn Thorn
KeyCode 239 = ETH ETH
KeyCode = diaeresis cedilla currency
KeyCode 241 = Agrave Agrave Atilde Atilde
KeyCode 242 = Egrave Egrave
KeyCode 243 = Igrave Igrave
KeyCode 244 = ograve Ograve Otilde Otilde
KeyCode 245 = Ugrave Ugrave
KeyCode 246 = adiaeresis adiaeresis
KeyCode 247 = ediaeresis ediaeresis
KeyCode 248 = idiaeresis idiaeresis
KeyCode 249 = odiaeresis Odiaeresis
KeyCode = Udiaeresis udiaeresis
KeyCode 251 = ssharp question Backslash
KeyCode 252 = Asciicircum Degree
KeyCode 253 = 3 Sterling
KeyCode 254 = Mode_switch
Use the KeyCode property of the event object to determine the input key value
Eg:if (event.keycode==13) alert ("enter!");
Key-Value Correspondence table
A 0X65 U 0X85
B 0X66 V 0X86
C 0X67 W 0X87
D 0X68 X 0X88
E 0X69 Y 0X89
F 0X70 Z 0X90
G 0X71 0 0X48
H 0X72 1 0X49
I 0x73 2 0X50
J 0X74 3 0X51
K 0x75 4 0X52
L 0X76 5 0X53
M 0X77 6 0X54
N 0X78 7 0X55
O 0X79 8 0X56
P 0X80 9 0X57
Q 0X81 ESC 0X1B
R 0X82 CTRL 0X11
S 0X83 SHIFT 0X10
T 0X84 ENTER 0XD
If you want to use a key combination, you can use Event.ctrlkey,event.shiftkey,event. Altkey to determine if the CTRL key, SHIFT key, and ALT key are pressed.