React useRef can be used for more than you think

React useRef can be used for more than you think

React useRef can be used for more than you think

You have probably used the useRef hook to access DOM nodes.

If you search for articles on ref, this is the most common example you’d find

import React, { Component, createRef } from "react";                                               class CustomTextInput extends Component {                             

 textInput = createRef();                                                     
 focusTextInput = () => this.textInput.current.focus();                                                 
 render() {                          
  return (                    
    <>                                 
   <input type="text" ref={this.textInput} /><button onClick={this.focusTextInput}>Focus the text input</button>                             </>                         
  );                 
        }                    
}

The above example shows how you’ll use refs if you have a class component.

If you are using functional components, this is the approach you’ll take to achieve the same thing,

function TextInputWithFocusButton() {
  const inputEl = useRef(null);
  const onButtonClick = () => {
    // `current` points to the mounted text input element
    inputEl.current.focus();
  };
  return (
    <>
      <input ref={inputEl} type="text" />
      <button onClick={onButtonClick}>Focus the input</button>
    </>
  );
}

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