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

title, tags, expertise, cover, firstSeen, lastUpdated

title	tags	expertise	cover	firstSeen	lastUpdated
Pad string	string	beginner	blog_images/blue-lake.jpg	2018-02-24T11:51:27+02:00	2020-10-22T20:24:04+03:00

Pads a string on both sides with the specified character, if it's shorter than the specified length.

• Use String.prototype.padStart() and String.prototype.padEnd() to pad both sides of the given string.
• Omit the third argument, char, to use the whitespace character as the default padding character.

const pad = (str, length, char = ' ') =>
  str.padStart((str.length + length) / 2, char).padEnd(length, char);

pad('cat', 8); // '  cat   '
pad(String(42), 6, '0'); // '004200'
pad('foobar', 3); // 'foobar'