JSFiddle - React, Tailwind, and code Playground

HTML

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Document</title>
</head>
<body>
    <p>24122</p>
</body>
</html>

JavaScript

let number = document.querySelector("#number");
let numberArr = number.innerHTML.toString().split("");
let stringNr = "";

for(let nr = 0; nr < numberArr.length; nr ++) {
  let spanNr = document.createElement("span");
  spanNr.innerHTML = numberArr[nr];
  
  console.log(spanNr)
}

console.log();