Date of yesterday

OSCC · JavaScript, Date · Oct 22, 2020

Results in a string representation of yesterday's date.

  • Use the Date constructor to get the current date.
  • Decrement it by one using Date.prototype.getDate() and set the value to the result using Date.prototype.setDate().
  • Use Date.prototype.toISOString() to return a string in yyyy-mm-dd format.
const yesterday = () => {
  let d = new Date();
  d.setDate(d.getDate() - 1);
  return d.toISOString().split('T')[0];
};
yesterday(); // 2018-10-17 (if current date is 2018-10-18)

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