js 如何获取当天是周几(一周的第几天)

const date = new Date();
// Mon Mar 23 2020 15:15:36 GMT+0800 (China Standard Time)

date.getFullYear();
// 2020

date.getDay();
// 1

date.getDate();
// 23

getWeekDay

const log = console.log;

const week = ["日", "一", "二", "三", "四", "五", "六"];  

const day = new Date().getDay();  

const weekday = week[day];  

log(`今天是星期`, weekday);

const log = console.log;

const week = ["日", "一", "二", "三", "四", "五", "六"];  

const day = new Date().getDay();  

const weekday =  week.charAt(day);

log(`今天是星期`, weekday);

// 判断时间是凌晨,早上,上午,中午,下午,傍晚,晚上,深夜

const log = console.log;

const now = new Date();
const  hour = now.getHours();

if(hour < 6){
   log("凌晨")
} else if (hour < 9){
   log("早上")
} else if (hour < 12){
    log("上午")
} else if (hour < 14){
    log("中午")
} else if (hour < 17){
   log("下午")
} else if (hour < 19){
    log("傍晚")
} else if (hour < 22){
    log("晚上")
} else {
   log("深夜")
} 

// 判断时间是上午,下午

if(hour <= 12){
     log("上午")
}else{
     log("下午")
}

Google Calendar API

https://developers.google.com/calendar/quickstart/js

https://developers.google.com/calendar/quickstart/nodejs

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padStart

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/padStart

      const date = new Date()
      const dateString = date.toLocaleString();
      const year = date.getFullYear();
      const month = date.getMonth() + 1;
      const day = date.getDate();

`${month + '.' + day}`
// "4.8"

`${month}`.padStart(2, "0") + '.' + `${day}`.padStart(2, "0");
// "04.08"

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