/Javascript/React/Use ref in component reactjs

Use ref in component reactjs

class CustomTextInput extends React.Component {
  constructor(props) {
    super(props);

    this.textInput = null;
    this.setTextInputRef = element => {      this.textInput = element;    };
    this.focusTextInput = () => {      // Donne le focus au champ texte en utilisant l’API DOM native.      if (this.textInput) this.textInput.focus();    };  }

  componentDidMount() {
    // Focus automatique sur le champ au montage
    this.focusTextInput();  }

  render() {
    // Utilise la fonction de rappel `ref` pour stocker une référence à l’élément
    // DOM du champ texte dans une propriété d’instance (ex. this.textInput)
    return (
      <div>
        <input
          type="text"
          ref={this.setTextInputRef}        />
        <input
          type="button"
          value="Donner le focus au champ texte"
          onClick={this.focusTextInput}        />
      </div>
    );
  }
}

-1

Source: fr.reactjs.org

Use ref in component reactjs

class AutoFocusTextInput extends React.Component {
  constructor(props) {
    super(props);
    this.textInput = React.createRef();  }

  componentDidMount() {
    this.textInput.current.focusTextInput();  }

  render() {
    return (
      <CustomTextInput ref={this.textInput} />    );
  }
}

-2

Source: fr.reactjs.org

Use ref in component reactjs

function CustomTextInput(props) {
  return (
    <div>
      <input ref={props.inputRef} />    </div>
  );
}

class Parent extends React.Component {
  render() {
    return (
      <CustomTextInput
        inputRef={el => this.inputElement = el}      />
    );
  }
}

-2

Source: fr.reactjs.org

Similar codes

0 vote304 views1 answer
POST http://localhost:3000/$(process.env.REACT_APP_API_URL)/auth/users/ 404 (Not Found) in react redux
Javascript React
1 vote294 views3 answers
Add react to existing project
Javascript React
3 votes306 views1 answer
Navigation react pass props
Javascript React
3 votes285 views3 answers
React portals
Javascript React
33 votes304 views5 answers
Img tag in react
Javascript React
18 votes258 views6 answers
Add svg in react
Javascript React
17 votes291 views5 answers
Add background image react native
Javascript React
8 votes296 views1 answer
React-fragment
Javascript React
0 vote310 views1 answer
Remarkable react js
Javascript React
26 votes324 views6 answers
React redirect to url
Javascript React