如何在没有 lambda 函数的情况下通过单个处理程序在 React Native 中处理几个 TextInput？

Question

我需要在 React Native 应用程序中通过单个事件处理程序处理一些输入，但不能使用 lambda 函数，因为它在我的应用程序中被禁止。使用 lambda 函数，您可以只发送第二个参数，它可能是这样的：

<TextInput
    placeholder = 'email'
    onSubmitEditing ={Keyboard.dismiss}
    onChangeText = {(text) => { this.handleTwoInputs(text, 'email'); }}
    autoCorrect = {false}
/>
<TextInput
    placeholder = 'name'
    onSubmitEditing ={Keyboard.dismiss}
    onChangeText = {(text) => { this.handleTwoInputs(text, 'name'); }}
    autoCorrect = {false}
/>
handleTwoInputs = (text, type) => {
  if(type === 'name'){
    this.inputName = text;
  } else {
   this.inputEmail = text;
 }
}

但是没有lambda函数怎么办呢？

Answer 1

您不需要使用箭头函数：

<TextInput
    placeholder = 'email'
    onSubmitEditing ={Keyboard.dismiss}
    onChangeText = {function(text) { this.handleTwoInputs(text, 'email'); }}
    autoCorrect = {false}
/>

<TextInput
    placeholder = 'name'
    onSubmitEditing ={Keyboard.dismiss}
    onChangeText = {function(text) { this.handleTwoInputs(text, 'name'); }}
    autoCorrect = {false}
/>

编辑：

好的，我想我误解了这个问题。使用 onChange 而不是 onChangeText:

可以实现您想实现的目标

<TextInput
    name = 'email_input'
    placeholder = 'email'
    onSubmitEditing ={Keyboard.dismiss}
    onChangeText = {handleTwoInputs}
    autoCorrect = {false}
/>

<TextInput
    name = 'name_input'
    placeholder = 'name'
    onSubmitEditing ={Keyboard.dismiss}
    onChangeText = {handleTwoInputs}
    autoCorrect = {false}
/>

handleTwoInputs = ({ nativeEvent }) => {
    const { eventCount, target, text } = nativeEvent

    if (target.name === 'name_input') {
      this.inputName = text;
    } else {
      this.inputEmail = text;
  }
}

如何在没有 lambda 函数的情况下通过单个处理程序在 React Native 中处理几个 TextInput？

How to handle a few TextInput by single handler in React Native without lambda function?

javascript

react-native

lambda

textinput

eventhandler