当我使用 React 单击按钮时,如何从 select 中选择一个选项?

How can I do to choose an option from a select when I click on a button using React?

当我使用 React

单击“Apple”按钮时,我想从 select 中选择选项“Apple”
import React from "react";
import { render } from "react-dom";
import ReactDOM from "react-dom";
import Select from "react-select";
import "react-select/dist/react-select.css";

class ReactSelect extends React.Component {
  constructor(props) {
    super(props);
    this.state = {
      itemtitle: "",
      multi: true,
      multiValue: [],
      options: [
        { value: "Color", label: "Yellow" },
        { value: "Fruit", label: "Apple" },
        { value: "Tool", label: "Spanner" }
      ]
    };
  }
  onTitleChange(e, value) {
    this.setState({ [e.target.name]: e.target.value });
    this.setState({ multiValue: e.target.value });
  }
  handleOnChange(value) {
    this.setState({ multiValue: value });
  }
  render() {
    return (
      <div>
        <Select.Creatable
          multi={this.state.multi}
          options={this.state.options}
          onChange={this.handleOnChange.bind(this)}
          value={this.state.multiValue}
          showNewOptionAtTop={false}
        />
        <button>Apple</button>
      </div>
    );
  }
}

ReactDOM.render(<ReactSelect />, document.body);

我的项目的完整代码在那里:

The full code

我该怎么做?非常感谢!

您可以在单击类似这样的按钮时更新 select 字段值。

handleOnClick = () => {
    this.setState({ multiValue: [{ value: "Fruit", label: "Apple" }] });
};
render() {
    return (
        <div>
            <Select.Creatable
                multi={this.state.multi}
                options={this.state.options}
                onChange={this.handleOnChange.bind(this)}
                value={this.state.multiValue}
                showNewOptionAtTop={false}
            />
            <button
                onClick={() => {
                this.handleOnClick();
                }}
            >
                Apples
            </button>
        </div>
    );
}

还附加了一个沙盒link。