getElementById in React – How to use document.getelementbyid in react?

Programmers use JavaScript to create websites and applications in the best interactive way possible to attract users. It is used by developers and programmers all over the world. Programming has become simpler when working with JavaScript as it has amazing libraries that allow you to have easy coding. React is the most used JavaScript library for creating interactive user interfaces. Programmers can simply create web applications. When working with react, you may often wonder what is getElementById in React – How to use document.getelementbyid in react?

Well, in this post, we will provide you with all the information you are looking for. Let’s start with the first and basic question about what getElementById in React is:

What is getElementById method?

The getElementById is a function in JavaScript (react) that allows you to get an HTML element by its Id. It is also known as a DOM method that returns the element having ID attributes with the value specified. The Id name is passed as a parameter along with the return value being the corresponding element.

Syntax

getElementById (id)

Where Id is the element to locate, which is case-sensitive as well as unique in the document.

Ways To Use document.getElementById in React

We have two amazing ways to use document.getElementById in react. Let’s have a look at the ways

Use document.getElementById through useRef() hook

The useRef is an object that store mutable information without needing to trigger re-render. In order to pass an argument, the .current property needs to be initialized to store recent information. It is helpful when working with DOM elements.

The initialValue is known as an argument accepted by the hook.

const ref = useRef(initialValue);

Have a look at the example

import React, { useRef, useEffect } from "react";

const MyComponent = () => {
  const ref = useRef(null);
  
  useEffect(() => {
    console.log(ref.current); // <div>Hi, I am MyConponent</div>
    console.log(typeof ref.current); // "object"
  }, []);
  
  return <div ref={ref}>Hi, I am MyComponent</div>;
};

Use document.getElementById through a ref

In order to getElementById, two steps should be followed

• Use ref prop to set the element
• In order to access an element inside a useEffect, use the current property of ref

Take a look at the example to understand it in a simpler way

import React, { useEffect } from "react";
import { createRoot } from "react-dom/client";

const App = () => {
  const ref = React.useRef(null);

  useEffect(() => {
    // The DOM element is accessible here.
    console.log(ref.current);
  }, []);

  return <div ref={ref}></div>;
};

const rootElement = document.getElementById("root");
const root = createRoot(rootElement);

root.render(<App />);

Conclusion

In this post, we shed light on the ways to use get.ElementById() method in react. It is ideal for those who are looking for the answer to getElementById in React – How to use document.getelementbyid in react.

I hope you find it helpful! I wish you all the best!

If you need assistance, feel free to write to us in the below comment box.