Adding a line Break into JS

Question

This is my code here I’ve tried adding a \n into it but it doesn’t add a line break. I’ve also tried <br/> with no luck:

var i = 0;
var txt = "Welcome : Made by Ole113";
var speed = 70;

function typeWriter() {
if (i < txt.length) {
document.getElementById("demo").innerHTML += txt.charAt(i);
i++;
setTimeout(typeWriter, speed);
}
}

Answer 1

Use this CSS property

body {

word-break:break-all;

}

Answer 2

I have doing like that and it didn't work.
I have tried a crazy idea
open my code below, go to js section, search a commented code in line 139 to 194.

not for advertising
https://code.sololearn.com/WH3xv416vBM9/?ref=app