querySelector

querySelector is a method in JavaScript that allows you to select an HTML element from the DOM (Document Object Model) using a CSS selector. It returns the first matching element found in the document. Here's an example of using querySelector to select an element with a specific class:

const element = document.querySelector('.my-class');

This would select the first element in the document that has a class of "my-class". You can also use querySelector to select elements by tag name, ID, or any other CSS selector.