onion/js/components/ascribe_forms/input_date.js

import React from 'react';

import AlertMixin from '../../mixins/alert_mixin'
import DatePicker from 'react-datepicker/dist/react-datepicker'

let InputDate = React.createClass({

    mixins : [AlertMixin],

    getInitialState() {
        return {value: null,
                value_formatted: null,
                alerts: null // needed in AlertMixin
        };
    },

    handleChange(date) {
        this.setState({
            value: date,
            value_formatted: date.format("YYYY-MM-DD")});
    },

    render: function () {
        let className = "form-control input-text-ascribe";
        let alerts = (this.props.submitted) ? null : this.state.alerts;
        return (
            <div className="form-group">
                {alerts}
                <DatePicker
                    key="example2"
                    dateFormat="YYYY-MM-DD"
                    selected={this.state.value}
                    onChange={this.handleChange}
                    placeholderText={this.props.placeholderText}/>
            </div>
        );
    }
});

export default InputDate;