SOURCE

function formatDate(date) {
      let myyear = date.getFullYear();
      let mymonth = date.getMonth() + 1;
      let myweekday = date.getDate();
      if (mymonth < 10) {
        mymonth = '0' + mymonth;
      }
      if (myweekday < 10) {
        myweekday = '0' + myweekday;
      }
      return (myyear + '-' + mymonth + '-' + myweekday);
    }
console.log(formatDate(new Date(2022,-3,1)));
console.log(formatDate(new Date(2022,0,0)));

console.log(formatDate(new Date(2022,0,1)));
console.log(formatDate(new Date(2022,3,0)));

console.log(formatDate(new Date(2022,3,1)));
console.log(formatDate(new Date(2022,6,0)));

console.log(formatDate(new Date(2022,6,1)));
console.log(formatDate(new Date(2022,9,0)));

console.log(formatDate(new Date(2022,9,1)));
console.log(formatDate(new Date(2022,12,0)));
console 命令行工具 X clear

                    
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