how to append data in dom using javascript code example

Example 1: .append js

let parent = document.createElement("div")
parent.append("Some text")

console.log(parent.textContent) // "Some text"

Example 2: appendchild javascript

const parent = document.createElement('div');
const child = document.createElement('p');
const childTwo = document.createElement('p');
parent.append(child, childTwo, 'Hello world'); // Works fine
parent.appendChild(child, childTwo, 'Hello world');
// Works fine, but adds the first element and ignores the rest