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Calculate the number of days from today

2022-07-21 02:45:00 【Ziwei front end】

n Calculate the number of days from today in string representation .

Use Date Constructor to get the current date .
Use Math.abs() and Date.prototype.getDate() Update the date accordingly and use Set as result Date.prototype.setDate().
be used for Date.prototype.toISOString() With yyyy-mm-dd The format returns a string .

const daysFromNow = n => {
  let d = new Date();
  d.setDate(d.getDate() + Math.abs(n));
  return d.toISOString().split('T')[0];
};
daysFromNow(5); // 2020-10-13 (if current date is 2020-10-08)

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