React Js Set Focus on Input field after rendering

How can you set focus on an input element in ReactJS?

In this React JS code snippet, the useRef and useEffect hooks are imported from the React library. The inputRef variable is created using the useRef hook and is assigned to the input element.

The useEffect hook is used to execute code after the component has rendered. In this case, it's used to set focus on the input field. Inside the useEffect callback, inputRef.current.focus() is called, which focuses on the input element.

The App component renders a container div with a heading and an input field. The input field is assigned the ref attribute with the inputRef variable.

How can you set the focus on a specific link in React.js after rendering?

This code snippet demonstrates how to set focus on a link element in React.js after rendering. The code defines a functional component called App. Inside the component, a useRef hook is used to create a reference called linkRef that will be attached to the link element.

The useEffect hook is then used to handle the focus logic. It runs once, immediately after the component has rendered, indicated by the empty dependency array []. Within the useEffect callback, it checks if the linkRef.current exists (i.e., the link element is rendered) and then calls the focus() method on it to set the focus on the link.