how to line split a string code example

Example 1: split string

const str = 'The quick brown fox jumps over the lazy dog.';

const words = str.split(' ');
console.log(words[3]);
// expected output: "fox"

const chars = str.split('');
console.log(chars[8]);
// expected output: "k"

const strCopy = str.split();
console.log(strCopy);
// expected output: Array ["The quick brown fox jumps over the lazy dog."]

Example 2: split string into lines

Just use tr command for separating words output into separate lines:
tr -s '[[:punct:][:space:]]' '\n'
Example for
cat file.txt | tr -s '[[:punct:][:space:]]' '\n'