.split()

Breaks the string on which it called into an array of substrings, and returns the new array.

string.split(separator);

The separator (optional) describes the pattern where each split should occur. It may be a string or a regular expression. If not provided, the returned array will contain the entire string as its lone element.

string.split(separator, limit);

The limit (optional) determines the number of substring elements included in the array.

Split string into array of names:

const stringOfPeople = 'Dominic, Shelly, Luka, Devin';

const arrayOfPeople = stringOfPeople.split(', ');

console.log(arrayOfPeople);
// Output: ['Dominic', 'Shelly, 'Luka, 'Devin']

Limit the number of names in array to three:

const stringOfPeople = 'Dominic, Shelly, Luka, Devin';

const arrayOfPeople = stringOfPeople.split(', ', 3);

console.log(arrayOfPeople);
// Output: ['Dominic', 'Shelly, 'Luka']

Split string without providing a separator argument:

const stringOfPeople = 'Dominic, Shelly, Luka, Devin';

const arrayOfPeople = stringOfPeople.split();

console.log(arrayOfPeople);
// Output: ['Dominic, Shelly, Luka, Devin']

Split string on each character:

const letters = 'abcde';

const lettersArray = letters.split('');

console.log(lettersArray);
// Output: ['a', 'b', 'c', 'd', 'e']