Remove whitespaces from a string

Returns a string with whitespaces removed. Use String.prototype.replace() with a regular expression to replace all occurrences of whitespace characters with an empty string.

const removeWhitespace = str => str.replace(/\s+/g, '');

// Example
removeWhitespace('Lorem ipsum.\n Dolor sit amet. ');
// 'Loremipsum.Dolorsitamet.'

Source

https://www.30secondsofcode.org/js/s/remove-whitespace