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React Js Replace Img Src Onerror

When working on web development projects, you may encounter scenarios where you need to dynamically replace a broken image source with a default one in ReactJS. This can be a common requirement when handling errors related to loading images from external sources. In this guide, we will walk you through how to achieve this functionality using ReactJS efficiently.

One of the essential features in ReactJS is the ability to handle errors gracefully, and a typical instance is replacing an image source when an error occurs during loading. To accomplish this task, we can utilize the `onError` event handler in combination with state management within React components.

To start, let's create a React component that includes an `img` element with an initial source and a fallback image URL that we will display in case the original image fails to load:

Jsx

import React, { useState } from 'react';

const ImageComponent = () => {
  const [imgSrc, setImgSrc] = useState('original-image-url.jpg');
  const fallbackImgSrc = 'fallback-image-url.jpg';

  const handleImageError = () => {
    setImgSrc(fallbackImgSrc);
  };

  return (
    <img src="{imgSrc}" alt="Sample Image" />
  );
};

export default ImageComponent;

In the above code snippet, we have defined a functional component `ImageComponent` that maintains the state of the `imgSrc`. If an error occurs while loading the image, the `onError` event handler triggers the `handleImageError` function, replacing the `imgSrc` with the fallback image URL.

Remember to replace `'original-image-url.jpg'` and `'fallback-image-url.jpg'` with your actual image URLs.

By utilizing the `onError` event handler, you can seamlessly replace the broken image source with a suitable fallback image, ensuring a smooth user experience on your website or application.

It is worth noting that this approach enhances the user interface by offering an alternative image in case the primary one fails to load, thereby preventing potential confusion or disruption for your users.

In conclusion, handling image loading errors gracefully in ReactJS by replacing the original image source with a fallback option is a valuable technique to improve the overall user experience. By implementing the `onError` event handler within your components and leveraging state management, you can ensure that your web application maintains a polished and professional appearance even in the face of unexpected image loading issues.

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