Create DOM elements programatically

• Create a div in memory:

const div = document.createElement('div');

• Set attributes and class:

div.setAttribute('id', 'my-div');
div.className = 'my-class';

• Add it to the DOM:

document.body.appendChild(div);
// or use any other container instead of body
document.querySelector('#element-with-id').appendChild(div);

• Clear the div’s contents:

• div.innerHTML = '' – clears all content

• div.textContent = '' – safer if just text
• div.replaceChildren() – modern & clean