問題：實現輸入框內點擊鍵盤Enter事件。

解決：先找輸入框這個元素，再使用keypress方法，Enter對應數字13，代碼如下：

$("#id").keypress(function (even) {if (even.which == 13) {alert("這里做事件觸發的效果");}} });

后續問題：輸入框的回車效果實現了，但實現后又會馬上自動刷新頁面，造成回車的效果又消失了。

解決：當form表單中只有一個input標簽時按回車鍵將會自動將表單提交?？梢栽偬砑右粋€input標簽 然后隱藏掉，代碼如下:

<input type="text" id="" name="" style="display: none;"/>

補充：下面是鍵盤下的鍵值對應的數字

keyCode 8 = BackSpace BackSpace keyCode 9 = Tab Tab keyCode 12 = Clear keyCode 13 = Enter keyCode 16 = Shift_L keyCode 17 = Control_L keyCode 18 = Alt_L keyCode 19 = Pause keyCode 20 = Caps_Lock keyCode 27 = Escape 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 keyCode 88 = x X keyCode 89 = y Y keyCode 90 = z Z keyCode 96 = KP_0 KP_0 keyCode 97 = KP_1 KP_1 keyCode 98 = KP_2 KP_2 keyCode 99 = KP_3 KP_3 keyCode 100 = 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 105 = 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 110 = KP_Decimal KP_Decimal keyCode 111 = KP_Divide KP_Divide keyCode 112 = F1 keyCode 113 = F2 keyCode 114 = F3 keyCode 115 = F4 keyCode 116 = F5 keyCode 117 = F6 keyCode 118 = F7 keyCode 119 = F8 keyCode 120 = F9 keyCode 121 = F10 keyCode 122 = F11 keyCode 123 = F12 keyCode 124 = F13 keyCode 125 = F14 keyCode 126 = F15 keyCode 127 = F16 keyCode 128 = F17 keyCode 129 = F18 keyCode 130 = F19 keyCode 131 = F20 keyCode 132 = 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 190 = period colon keyCode 192 = numbersign apostrophe keyCode 210 = 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 220 = less greater bar keyCode 221 = plus asterisk asciitilde keyCode 227 = multiply division keyCode 228 = acircumflex Acircumflex keyCode 229 = ecircumflex Ecircumflex keyCode 230 = 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 240 = 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 250 = udiaeresis Udiaeresis keyCode 251 = ssharp question backslash keyCode 252 = asciicircum degree keyCode 253 = 3 sterling keyCode 254 = Mode_switch使用event對象的keyCode屬性判斷輸入的鍵值 eg：if(event.keyCode==13)alert(“enter!”);鍵值對應表 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

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