30-seconds-of-code/snippets/truncateString.md

title, tags

title	tags
truncateString	string,beginner

Truncates a string up to a specified length.

• Determine if the string's 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...'