JSFiddle - React, Tailwind, and code Playground

HTML

<p id="ppp">
1,2,3,4,5,6,7
</p>

<p id="output">

</p>

JavaScript

var theText = document.getElementById("ppp").innerHTML;

var array = [];

array = theText.split(",");

for(i = 0; i < array.length; i++) {
		var curr = document.getElementById("output").innerHTML;
    
    curr = curr + array[i] + "<br>";
    
    document.getElementById("output").innerHTML = curr;
}