微信小程序获取当前时间以及获取星期几

效果图如下所示

util.js

function formatTime(date) {
  var year = date.getFullYear()
  var month = date.getMonth() + 1
  var day = date.getDate()
  var hour = date.getHours()
  var minute = date.getMinutes()
  var second = date.getSeconds()
  return [year, month, day].map(formatNumber).join('/') + ' ' + [hour, minute, second].map(formatNumber).join(':')
}

function formatNumber(n) {
  n = n.toString()
  return n[1] ? n : '0' + n
}
function formatTimeTwo(number, format) {
  var formateArr = ['Y', 'M', 'D', 'h', 'm', 's'];
  var returnArr = [];
  var date = new Date(number * 1000);
  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()));
  for (var i in returnArr) {
    format = format.replace(formateArr[i], returnArr[i]);
  }
  return format;
}

const getWeekByDate = dates => {
  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];
}

module.exports = {
  formatTime: formatTime,
  formatTimeTwo: formatTimeTwo,
  getWeekByDate: getWeekByDate
}

.js

const util = require('../../utils/util.js')
Page({
  data: {
  },
  onLoad: function (options) {

    let time = util.formatTime(new Date());

    console.log('当前日期和时间:', time)
	
	console.log('今天周几:', util.getWeekByDate(new Date()))
    
    //获取当前时间戳  
    var timestamp = Date.parse(new Date());
    timestamp = timestamp / 1000;
    
    console.log("当前时间戳为:" + timestamp);

    console.log("时间戳转日期:",util.formatTimeTwo(timestamp, 'Y-M-D h:m:s'));

    //获取当前时间  
    var n = timestamp * 1000;
    var date = new Date(n);
    //年  
    var Y = date.getFullYear();
    //月  
    var M = (date.getMonth() + 1 < 10 ? '0' + (date.getMonth() + 1) : date.getMonth() + 1);
    //日  
    var D = date.getDate() < 10 ? '0' + date.getDate() : date.getDate();
    //时  
    var h = date.getHours();
    //分  
    var m = date.getMinutes();
    //秒  
    var s = date.getSeconds();


    console.log('当前年月日:',date.toLocaleDateString());

    console.log('当前日期时间:',date.toLocaleString());

    console.log('当前时间:',date.toLocaleTimeString());

    console.log("当前日期和时间:" + Y + '-' + M + '-' + D + ' ' + h + ":" + m + ":" + s);
  },
})

参考手册：https://www.w3school.com.cn/js/js_date_methods.asp


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