Truncate string

OSCC · JavaScript, String · Oct 21, 2020

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...'

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