将光标移动到TextField -本机脚本的末尾

var textField = document.getElementById("myTextField");
textField.selectionStart = textField.selectionEnd = textField.value.length;

class MyComponent extends React.Component {
  textFieldRef = React.createRef();

  componentDidMount() {
    this.textFieldRef.current.focus();
    const textField = this.textFieldRef.current;
    textField.setSelectionRange(textField.value.length, textField.value.length);
  }

  render() {
    return <input ref={this.textFieldRef} />;
  }
}