30-seconds-of-code/snippets/js/s/round-number-to-precision.md

title, type, language, tags, cover, dateModified

title	type	language	tags	cover	dateModified
Round number to given precision	snippet	javascript	math	yellow-white-mug-1	2020-10-22T20:24:30+03:00

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