微信小程序上时间转换格式

• utils/utils.ts

日期格式转换

      /**
      * 时间戳转化为年 月 日 时 分 秒
      * @params number 传入时间戳
      * @params format：返回格式，支持自定义，但参数必须与formateArr里保持一致
      * formatTime(sjc,'Y/M/D h:m:s')
      */
      export function formatTime(_Date: any, format: any = "Y/M/D") {
        if (!_Date) {
          return "";
        }
        var date = new Date(_Date);
        return commonDate(date,format)
      }

      const commonDate = (date: any, format = "Y/M/D") => {
        var formateArr = ["Y", "M", "D", "h", "m", "s"];
        var returnArr = [];
        returnArr.push(date.getFullYear());
        returnArr.push(formatNumber(date.getMonth() + 1));
        returnArr.push(formatNumber(date.getDate()));
        returnArr.push(formatNumber(date.getHours()));
        returnArr.push(formatNumber(date.getMinutes()));
        returnArr.push(formatNumber(date.getSeconds()));
        let timeStr = format;
        for (var i in formateArr) {
          timeStr = timeStr.replace(formateArr[i], returnArr[i]);
        }
        return timeStr;
      }

      const formatNumber = (n: number) => {
        const s = n.toString()
        return s[1] ? s : '0' + s
      }
      const  formatDate = (date: any, format = "Y/M/D") => {
        return commonDate(date,format)
      }
        // 【JS】js将 /Date(1669257627432+0800)/ 转换为YYYY-MM-DD格式
      export function formatDateStamp(time?: any, format?:any) {
        if (!time) {
          return ''
        }
        var t = time.slice(6, 19)
        var NewDtime = new Date(parseInt(t));
        return formatDate(NewDtime, format );
      }

• 使用

• 默认显示 YYYY/MM/DD 格式

      import { formatDateStamp,formatTime } from "../../utils/util";
  
      console.log(formatDateStamp('/Date(1669257627432+0800)/')) // 2022/11/24
      console.log(formatDateStamp('/Date(1669257627432+0800)/','Y-M-D h:m:s')) // 2022-11-24 10:40:27
      console.log(formatTime('2022-10-13T12:30:43.73')) // 2022/10/13
      console.log(formatTime('2022-10-13T12:30:43.73','Y-M-D h:m:s')) // 2022-10-13 12:30:43
      console.log(formatTime('2022-10-13T12:30:43.73','Y/M/D h:m:s')) // 2022/10/13 12:30:43
      console.log(formatTime(1669267989009)) // 2022/11/24
      console.log(formatTime(1669267989009,'Y-M-D h:m:s')) // 2022-11-24 13:33:09
  

日期转换为周几

• 方法

    export function getWeekByDate ( dates:any)  {
      let show_day = new Array('周日', '周一', '周二', '周三', '周四', '周五', '周六');
      let date = new Date(dates);
      date.setDate(date.getDate());
      let day = date.getDay();
      return show_day[day];
    }
  

• 使用

    console.log(getWeekByDate('2022-11-24')) // 周四
    console.log(getWeekByDate('2022/11/24')) // 周四
    console.log(getWeekByDate('2022-10-13T12:30:43.73')) // 周四
  

获取未来的天数的完整信息

• 方法

    export function dealTime (num: any)  {     // num：未来天数
      var time = new Date()     // 获取当前时间日期
      var date = new Date(time.setDate(time.getDate() + num)).getDate()  //这里先获取日期，在按需求设置日期，最后获取需要的
      var year = time.getFullYear()
      var month = time.getMonth() + 1   // 获取月份
      var day: any = time.getDay()   //  获取星期
      switch (day) {             //  格式化
        case 0: day = "周日"
          break
        case 1: day = "周一"
          break
        case 2: day = "周二"
          break
        case 3: day = "周三"
          break
        case 4: day = "周四"
          break
        case 5: day = "周五"
          break
        case 6: day = "周六"
          break
      }
      var month1 =  month < 10 ? "0" + month :  month
      var date1 = date < 10 ? "0" + date : date
      var obj = {
        year: year,
        month: month,
        date: date,
        day: day,
        newday: year + '/' + month1 + '/' + date1,
      }
      // 安卓可以处理‘-’与‘/’的时间格式，而IOS系统上只能处理‘/’的时间格式
      return obj      // 返回对象
    }
  

• 使用

      console.log(dealTime(0)) // 今天 { date: 24,day: "周四",month: 11,newday: "2022/11/24",year: 2022 }
      console.log(dealTime(1)) // 明天 { date: 25,day: "周五",month: 11,newday: "2022/11/25",year: 2022 }
      console.log(dealTime(7)) // { year: 2022, month: 12, date: 1, day: "周四", newday: "2022/12/01" }
  

Date.parse

• 日期比较大小

    console.log(Date.parse('2022-11-24') <= Date.parse('2022-11-1')) // false
    console.log(Date.parse('2022-11-01') <= Date.parse('2022-11-14')) // true