JSFiddle - React, Tailwind, and code Playground

CSS

.el {
    transition: transform .33s ease;
    background: red;
    width: 100px;
    height: 100px;
}

JavaScript

var div = document.createElement('div');
div.className = 'el';
div.style.transform = 'scale(.5) translate3d(100px, 100px, 0)'; // первоначальное состояние
document.body.appendChild(div);
setTimeout(function(){
  div.style.transform = 'scale(1) translate3d(0px, 0px, 0)'; // конечное
}, 0)