title: round tags: math,intermediate

Rounds a number to a specified amount of digits.

Use Math.round() and template literals to round the number to the specified number of digits. Omit the second argument, decimals to round to an integer.

const round = (n: number, decimals = 0) =>
  Number(`${Math.round(Number(`${n}e${decimals}`))}e-${decimals}`);

round(1.005, 2); // 1.01