30-seconds-of-code/snippets/truncate-string.md

title, tags, cover, firstSeen, lastUpdated

title	tags	cover	firstSeen	lastUpdated
Truncate string	string	bamboo-lamp	2017-12-17T17:55:51+02:00	2020-10-21T21:17:45+03:00

Truncates a string up to a specified length.

• Determine if String.prototype.length is greater than num.
• Return the string truncated to the desired length, with '...' appended to the end or the original string.

const truncateString = (str, num) =>
  str.length > num ? str.slice(0, num > 3 ? num - 3 : num) + '...' : str;

truncateString('boomerang', 7); // 'boom...'