How to use and implement useContext()

How to Use useRef:Using useRef in React is essential for accessing and managing DOM elements, focusing elements, or storing mutable values across renders without causing re-renders. Here's a guide on how to use and implement useRef, and when it's appropriate to do so . 

When to Use useRef:

• Accessing DOM Elements: Use useRef when you need to access a DOM element.

• Storing Previous Values: Use useRef to store and access previous values across renders.

• Focus Management: Use useRef to focus on an input element or another element imperatively.

• Avoiding Re-renders: Use useRef to store values that don't trigger a re-render when they change. 

How to Use useRef:

• Import the Hook: Import the useRef hook from React.

• Create a Ref: Create a ref by calling useRef and assign it to a variable.

• Accessing and Using the Ref:Use .current property of the ref to access and manipulate the value.

Here's an example of how to use useRef to manage a focused input element:

import React, { useRef } from 'react';

const FocusInputComponent = () => {
  const inputRef = useRef(null);

  const focusInput = () => {
    inputRef.current.focus();
  };

  return (
    <div>
      <input ref={inputRef} type="text" />
      <button onClick={focusInput}>Focus Input</button>
    </div>
  );
};

export default FocusInputComponent;