let myElm = document.createElement("p"); // Create a new element
myElm.innerText = 'test'; // Change the text of the element
myElm.style.color = 'red'; // Change the text color of the element
document.body.appendChild(myElm); // Add the object to the DOM
var newElement = document.createElement("div"); //change div to your element
document.getElementById("myElement").appendChlid(newElement); //change myElement to your ALREADY EXISTING element