反应 js blueprintjs 日期范围选择器不起作用

react js blueprintjs Date Range Picker not work

我需要在 BlueprintJS(documentation) 上创建 DateRangePicker,并在我的组件中创建 RangePicker, 就像这个 screenshot.

我安装了所有 npm 包,并按照说明进行操作:

import { DateRangePicker } from "@blueprintjs/datetime";

<DateRangePicker
    value={[this.state.startDate, this.state.endDate]}
    onChange={this.handleDateChange}
/>

但无论如何都有错误:

Cannot read property 'startDate' of null
TypeError: Cannot read property 'startDate' of null

请帮忙,我需要什么来工作 DateRangePicker

您应该将 state 定义为组件的字段。默认情况下,如果不设置state,则等于null

import React from 'react'
import { DateRangePicker } from "@blueprintjs/datetime";

class MyAwesomeComponent extends React.Component {
    constructor(props) {
        super(props)
        this.state = {
            startDate: new Date("2018-05-01T12:13:30.643Z"),
            endDate: new Date("2018-05-03T12:13:30.643Z")
        }
    }

    render() {
        return (
            <div className="my-component">
                <DateRangePicker
                    value={[this.state.startDate, this.state.endDate]}
                    onChange={this.handleDateChange}
                />
            </div>
        )
    }
}