how to add element to dom code example

Example 1: javascript append to paragraph

// In the JS script

var parElement = document.getElementById("myPar");
var textToAdd = document.createTextNode("Text to be added");
parElement.appendChild(textToAdd);

//In the HTML file

<p id="myPar"></p>

Example 2: js create tag

//create div
let div = document.createElement('div');
//create button
let button = document.createElement('button');