1. Standard time is converted to Chinese standard time

     

    let date1 = '2019-11-19'; // Standard timeletdata2 = new Date(date1); //date2: Tue Nov 19 2019 08:00:00 GMT+0800Copy the code

  2. Chinese standard time goes to YYYY-MM-DD

     

    let  d = new Date('Tue Nov 19 2019 08:00:00 GMT+0800'); 
let newTime = d.getFullYear() + "-" + (d.getMonth() + 1) + "-" + d.getDate();
console.log(newTime)// "2019-11-19"Copy the code
  3. Calculate monthly difference

    let d1 = new Date('the 2018-10');
let d2 = new Date('2019-12');
let date1 = parseInt(d1.getFullYear()) * 12 + parseInt(d1.getMonth()+1);
let date2 = parseInt(d2.getFullYear()) * 12 + parseInt(d2.getMonth()+1);
let newTime = Math.abs(date1 - date2);
console.log(newTime)//14

Copy the code

  4. The time stamp

     

    let result = new Date('2017-09-19').getTime();
console.log(result)//1505779200000Copy the code
  5. Gets the last day of the month

    Var lastDay = new Date (2020,6,0). GetDate ()Copy the code