The purpose of string padding is to add characters to a string, so it reaches a specific length.

padEnd(), introduced in ES2017, adds such characters at the end of the string.

padEnd(targetLength [, padString])

Sample usage:

padEnd()
‘test’.padEnd(4) ‘test’
‘test’.padEnd(5) ‘test ‘
‘test’.padEnd(8) ‘test    ‘
‘test’.padEnd(8, ‘abcd’) ‘testabcd’

Also see padStart().