javascript - 如何更改 React-bootstrap-daterangepicker 中的美国默认日期格式输入字段

Question

我是 React 和 Javascript 新手，遇到以下问题:我需要更改 React-bootstrap-daterangepicker 中的默认美国日期格式。我找到了一些有关从 momentjs 站点更改区域设置对象的信息，但不确定如何具体实现它...我还尝试添加 dateFormat="DD/MM/YYYY"(和 format="DD/MM/YYYY")属性到我的 DatePicker 但没有成功。 我的 React 版本是 15.4.0 提前致谢!

import React from 'react';
import { ControlLabel, FormGroup, HelpBlock } from 'react-bootstrap';
import DatePicker from "react-bootstrap-daterangepicker";
import moment from 'moment';

class DateRangePicker extends React.Component {

    componentWillMount() {
        const value = new Date().toISOString().replace("T", " ").replace("Z", "");
        const date = value;

        this.setState({
            value: date,
            startDate: moment(),
            endDate: moment()

        });

    }

    handleChange(e, datepicker) {
        this.setState({

            startDate: datepicker.startDate,
            endDate: datepicker.endDate,
            value: datepicker.startDate + " to " + datepicker.endDate
        });
        const label = datepicker.startDate + " to " + datepicker.endDate;

        const {startDate, endDate} = datepicker;
        this.props.onSelect(startDate, endDate)
    }

    render() {
        let start = moment(this.state.startDate).format("DD/MM/YYYY");
        let end = moment(this.state.endDate).format("DD/MM/YYYY");
        let dateRange = start + ' to ' + end;
        return (
            <fieldset className="form-group form-group--small pull-left">
                <legend className="hidden">Choose a date range</legend>
                <FormGroup>
                    <ControlLabel className="hidden" htmlFor="dateRange">
                        Date range:</ControlLabel>
                    <DatePicker
                        readOnly="false"
                        startDate={this.start}
                        endDate={this.end}
                        onApply={this
                            .handleChange
                            .bind(this)}
                        onChange={this
                            .handleChange
                            .bind(this)}>
                        <div className="input-group input-group-small">
                            <div className="input-group-addon">
                                <i className="fa fa-calendar"></i>
                            </div>
                            <input type="text" id="dateRange" className="form-control" value={dateRange} />

                        </div>
                    </DatePicker>
                    <HelpBlock className="hidden">Help</HelpBlock>
                </FormGroup>

            </fieldset>

        );
    }
}

export default DateRangePicker;

<script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.1.0/react.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.1.0/react-dom.min.js"></script>

Answer 1

我设法通过在我的组件中的 componentWillMount() 方法中初始化语言环境 const 来解决我的问题，即

    componentWillMount() {
    const value = new Date().toISOString();
    const date = value;
    const locale = locale;

    this.setState({
        value: date,
        locale: {
            'format': 'DD/MM/YYYY'
        },
        startDate: moment(),
        endDate: moment()

    });
   }

然后为 DatePicker 标记设置区域设置属性:

 <DatePicker  locale={this.state.locale}

...