react native 对日期的处理
import React, { Component, Fragment } from 'react' import { StyleSheet, Text, View, TouchableOpacity, Dimensions } from 'react-native' import moment from 'moment' const weekTitle = ['日', '一', '二', '三', '四', '五', '六'] class WeekCalender extends Component { constructor(props) { super(props) this.state = { date: new Date() } } _onPress(date) { this.setState({ date }) } lastWeek = () => { this.setState({ date: new Date(this.state.date).getTime() - 7 * 24 * 60 * 60 * 1000 }) } nextWeek = () => { this.setState({ date: new Date(this.state.date).getTime() + 7 * 24 * 60 * 60 * 1000 }) } render() { let days = [] // 存放节点 let date = new Date(this.state.date) let num = 7 - date.getDay() // 今天 分割点 for (let i = 7 - num; i > 0; i--) { // 今天以前的日期 let nowDate = new Date(date.getFullYear(), date.getMonth(), date.getDate() - i) let fmtNow = moment(nowDate).format('YYYY-MM-DD'); let node = <TouchableOpacity onPress={this._onPress.bind(this, fmtNow)}><Text style={[styles.fs, styles.st]}>{nowDate.getDate()}</Text></TouchableOpacity> if (fmtNow === moment(date).format('YYYY-MM-DD')) { node = <View style={styles.curr}><TouchableOpacity onPress={this._onPress.bind(this, fmtNow)}><Text style={[styles.fs, styles.st]}>{nowDate.getDate()}</Text></TouchableOpacity></View> } days.push(node) } for (let i = 0; i < num; i++) { // 今天以后的日期 含今天 let nowDate = new Date(date.getFullYear(), date.getMonth(), date.getDate() + i) let fmtNow = moment(nowDate).format('YYYY-MM-DD'); let node = <TouchableOpacity onPress={this._onPress.bind(this, fmtNow)}><Text style={[styles.fs, styles.st]}>{nowDate.getDate()}</Text></TouchableOpacity> if (fmtNow === moment(date).format('YYYY-MM-DD')) { node = <View style={styles.curr}><TouchableOpacity onPress={this._onPress.bind(this, fmtNow)}><Text style={[styles.fs, styles.st, { color: '#FFFFFF' }]}>{nowDate.getDate()}</Text></TouchableOpacity></View> } days.push(node) } return ( <Fragment> <View style={{ flexDirection: 'row' }}> <Text style={{ width: Dimensions.get('window').width / 2, textAlign: 'center', color: '#316DE6', fontSize: 15 }} onPress={this.lastWeek}>上一周</Text> <Text style={{ width: Dimensions.get('window').width / 2, textAlign: 'center', color: '#316DE6', fontSize: 15 }} onPress={this.nextWeek}>下一周</Text> </View> <View style={[styles.container01, styles.space]}> <View style={styles.weekTitleContainer}> { weekTitle.map((item) => ( <View> <Text style={[styles.fs, styles.st]}>{item}</Text> </View> )) } </View> <View style={[styles.weekTitleContainer, styles.fs]}> {days} </View> </View> </Fragment> ) } } const styles = StyleSheet.create({ weekTitleContainer: { height: 27, flexDirection: 'row', justifyContent: 'space-around' }, fs: { fontSize: 13, }, curr: { borderRadius: 24, backgroundColor: '#316DE6', width: 24, height: 24, textAlign: 'center', lineHeight: 24, }, st: { width: 24, height: 24, textAlign: 'center', lineHeight: 24, }, space: { flex: 1, paddingTop: 10, paddingHorizontal: 30, paddingBottom: 10 } }) export default WeekCalender
用到一个比较重要的库: https://github.com/moment/moment
import moment from 'moment'
此文仅为鄙人学习笔记之用,朋友你来了,如有不明白或者建议又或者想给我指点一二,请私信我。liuw_flexi@163.com/QQ群:582039935.
我的gitHub: (学习代码都在gitHub)
https://github.com/nwgdegitHub/