Round number to given precision

OSCC · JavaScript, Math · Oct 22, 2020

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, decimals = 0) =>
  Number(`${Math.round(`${n}e${decimals}`)}e-${decimals}`);
round(1.005, 2); // 1.01

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