如何在react js中单击按钮或单击图标打开datepicker

Question

我正在我的演示应用程序中使用这个datepicker

https://www.npmjs.com/package/react-datepicker但是我的datepicker是在我点击输入字段时打开的。当用户点击右侧的按钮和图标而不是点击输入时，我们可以打开日期选择器吗？

import React from "react";
import ReactDOM from "react-dom";
import DatePicker from "react-datepicker";

import "react-datepicker/dist/react-datepicker.css";

import "./styles.css";

class Example extends React.Component {
  constructor(props) {
    super(props);
    this.state = {
      startDate: new Date()
    };
    this.handleChange = this.handleChange.bind(this);
  }

  handleChange(date) {
    this.setState({
      startDate: date
    });
  }

  openDatePicker = () => {};

  render() {
    return (
      <div>
        <DatePicker
          selected={this.state.startDate}
          onChange={this.handleChange}
        />
        <button onClick={this.openDatePicker}>openDate</button>
      </div>
    );
  }
}

const rootElement = document.getElementById("root");
ReactDOM.render(<Example />, rootElement);

Answer 1

您需要将按钮设置为customInput

import React from 'react'

const CustomInput = React.forwardRef((props,ref) => {

    return (
       <button onClick={props.onClick} ref={ref}>
         {props.value || props.placeholder}
       </button>
    )

})

export default CustomInput;

然后在主组件中。这样做

import React from "react";
import ReactDOM from "react-dom";
import DatePicker from "react-datepicker";
import CustomInput from "./CustomInput"
import "react-datepicker/dist/react-datepicker.css";

import "./styles.css";

class Example extends React.Component {
  constructor(props) {
    super(props);
    this.state = {
      startDate: new Date()
    };
    this.handleChange = this.handleChange.bind(this);
  }

  handleChange(date) {
    this.setState({
      startDate: date
    });
  }

  render() {
    return (
      <div>
        <DatePicker
          selected={this.state.startDate}
          onChange={this.handleChange}
          customInput={<CustomInput />}
          placeholderText="openDate"
        />
      </div>
    );
  }
}

const rootElement = document.getElementById("root");
ReactDOM.render(<Example />, rootElement);

Answer 2

是的，除了单击组件本身之外，还可以使其打开。您可以使用DatePicker的open属性对其进行控制。以下是您的代码的修改版本：

import React from "react";
import ReactDOM from "react-dom";
import DatePicker from "react-datepicker";

import "react-datepicker/dist/react-datepicker.css";

import "./styles.css";

class Example extends React.Component {
  constructor(props) {
    super(props);
    this.state = {
      startDate: new Date(),
      datePickerIsOpen: false,
    };
    this.handleChange = this.handleChange.bind(this);
    this.openDatePicker = this.openDatePicker.bind(this)
  }

  handleChange(date) {
    this.setState({
      startDate: date
    });
  }

  openDatePicker() {
    this.setState({
      datePickerIsOpen: !this.state.datePickerIsOpen,
    });
  };

  render() {
    return (
      <div>
        <button onClick={this.openDatePicker}>openDate</button>
        <DatePicker
          selected={this.state.startDate}
          onChange={this.handleChange}
          onClickOutside={this.openDatePicker}
          open={this.state.datePickerIsOpen}
        />
      </div>
    );
  }
}

const rootElement = document.getElementById("root");
ReactDOM.render(<Example />, rootElement);

正如您所看到的，我们已经向示例类添加了一个状态，它控制DatePicker的open属性。我还添加了onClickOutter，它可以用来确定当datepicker打开后，如果用户单击datepicker之外的内容，应该发生什么。