如何从日期选择器获取日期并显示在表格中？材料的UI。 ReactJS

Question

我使用Material-UI中的Date Picker组件来实现React JS。我想在桌子上显示所选日期。日期是一个对象，我尝试在表格行中显示时出错。这该怎么做？

import React, { Component } from 'react';
import DatePicker from 'material-ui/DatePicker';
import { Table, TableBody, TableHeader, TableHeaderColumn, TableRow, TableRowColumn } from 'material-ui/Table';

export default class AddTaskDialog extends Component {
  constructor(props) {
    super(props);
    this.state = { controlledDate: {} };
    this.handleChangeDate = this.handleChangeDate.bind(this);
  }

  handleChangeDate = (event, date) => {
    this.setState({
      controlledDate: date,
    });
  };

  render() {
    return (
      <div>
        <DatePicker hintText="Date" value={this.state.controlledDate} onChange={this.handleChangeDate}/>
        <Table>
          <TableHeader>
            <TableRow>
              <TableHeaderColumn>Date</TableHeaderColumn>
            </TableRow>
          </TableHeader>
          <TableBody>
            <TableRow>
              <TableRowColumn>{this.state.controlledDate}</TableRowColumn>
            </TableRow>
          </TableBody>
        </Table>
      </div>
    );
  }
}

Answer 1

发送到handleChangeDate处理程序的日期是object类型。您需要将其转换为日期字符串才能在TableRowColumn内部进行渲染。

export default class AddTaskDialog extends Component {
 constructor(props) {
 super(props);
 this.state = { controlledDate: new Date() };
 this.handleChangeDate = this.handleChangeDate.bind(this);
}

handleChangeDate = (event, date) => {
  this.setState({
    controlledDate: date
  });
};

// INSIDE RENDER
<TableRowColumn>{this.state.controlledDate.toDateString()}</TableRowColumn>

const date = new Date();

console.log(typeof date);
   
console.log(date.toDateString());

Answer 2

{this.state.controlledDate}

不是{this.controlledDate}

Answer 3

你错过了TableRow中的状态。

    constructor(props) {
         super(props);
         this.state = { controlledDate: '' };
         this.handleChangeDate = this.handleChangeDate.bind(this);
    }

    ...

    render() {
       ...

       <TableRow>
           TableRowColumn>{this.state.controlledDate || New Date(Date.now())}</TableRowColumn>
       </TableRow>
    }