简单键盘回车事件

class App extends React.Component<connectedProps & RouteComponentProps> {

  public state = {
    form: {
      param: '',
    },

  // 监听输入框
  public changeInput = (e: any) => {
    // console.log(e.target, 'input');
    const value = e.target.value
    this.setState(() => (Object.assign(this.state.form, { param: value })))

  }
  
  监听键盘事件
  public search = (e) => {
  
  获取键盘keyCode值
  // console.log(e.keyCode,'code');
	
    if (e.keyCode === 13) {
      // 回车键为 13
      this.componentDidMount()
    }
  }

// public getList...
    
  public componentDidMount() {
    this.getList(this.state.form)
  }
  public render() {
    return (
 		<Input placeholder="请输入查找项目" onKeyUp={this.search} onChange={this.changeInput} maxLength={50} />
 	)
  }
}

export default withRouter(connect(mapStateToProps, mapDispatchToProps)(App))

键码表
https://www.cnblogs.com/hsapphire/archive/2009/12/16/1625642.html

keycode 0 = 
keycode 1 = 
keycode 2 = 
keycode 3 = 
keycode 4 = 
keycode 5 = 
keycode 6 = 
keycode 7 = 
keycode 8 = BackSpace BackSpace 
keycode 9 = Tab Tab 
keycode 10 = 
keycode 11 = 
keycode 12 = Clear 
keycode 13 = Enter 
keycode 14 = 
keycode 15 = 
keycode 16 = Shift_L 
keycode 17 = Control_L 
keycode 18 = Alt_L 
keycode 19 = Pause 
keycode 20 = Caps_Lock 
keycode 21 = 
keycode 22 = 
keycode 23 = 
keycode 24 = 
keycode 25 = 
keycode 26 = 
keycode 27 = Escape Escape 
keycode 28 = 
keycode 29 = 
keycode 30 = 
keycode 31 = 
keycode 32 = space 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 44 = 
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 58 = 
keycode 59 = 
keycode 60 = 
keycode 61 = 
keycode 62 = 
keycode 63 = 
keycode 64 = 
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 91 = 
keycode 92 = 
keycode 93 = 
keycode 94 = 
keycode 95 = 
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 138 = 
keycode 139 = 
keycode 140 = 
keycode 141 = 
keycode 142 = 
keycode 143 = 
keycode 144 = 
keycode 145 = 
keycode 146 = 
keycode 147 = 
keycode 148 = 
keycode 149 = 
keycode 150 = 
keycode 151 = 
keycode 152 = 
keycode 153 = 
keycode 154 = 
keycode 155 = 
keycode 156 = 
keycode 157 = 
keycode 158 = 
keycode 159 = 
keycode 160 = 
keycode 161 = 
keycode 162 = 
keycode 163 = 
keycode 164 = 
keycode 165 = 
keycode 166 = 
keycode 167 = 
keycode 168 = 
keycode 169 = 
keycode 170 = 
keycode 171 = 
keycode 172 = 
keycode 173 = 
keycode 174 = 
keycode 175 = 
keycode 176 = 
keycode 177 = 
keycode 178 = 
keycode 179 = 
keycode 180 = 
keycode 181 = 
keycode 182 = 
keycode 183 = 
keycode 184 = 
keycode 185 = 
keycode 186 = 
keycode 187 = acute grave 
keycode 188 = comma semicolon 
keycode 189 = minus underscore 
keycode 190 = period colon 
keycode 191 = 
keycode 192 = numbersign apostrophe 
keycode 193 = 
keycode 194 = 
keycode 195 = 
keycode 196 = 
keycode 197 = 
keycode 198 = 
keycode 199 = 
keycode 200 = 
keycode 201 = 
keycode 202 = 
keycode 203 = 
keycode 204 = 
keycode 205 = 
keycode 206 = 
keycode 207 = 
keycode 208 = 
keycode 209 = 
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 219 = 
keycode 220 = less greater bar 
keycode 221 = plus asterisk asciitilde 
keycode 222 = 
keycode 223 = 
keycode 224 = 
keycode 225 = 
keycode 226 = 
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

参考
javascript如何获得按键的keycode：https://blog.youkuaiyun.com/simon_xu_sh/article/details/42644131