reactjs img src A Comprehensive Guide to Using Images in Your React Project

Using images in your React project can be a bit tricky, but don't worry, I've got you covered. You can use the `img` tag with the `src` attribute to display images, but did you know that React recommends using the `src` attribute with a string value instead of a variable?

To use a string value for `src`, you can simply assign a string to the `src` attribute, like this: `src="image.jpg"`. This is a great way to display images in your React project.

One thing to keep in mind is that you can also use the `require` function to import images as a string, like this: `src={require('./image.jpg').default}`. This is especially useful when you need to import images from a module.

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In React, you have two main ways to include an image in a component.

You can put the image file under the src folder and import it into the component where you're using it.

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To import the image, put it somewhere under the src folder and then import it into the React component where you're using it.

This alone won't automatically make it available, so you have to import the image.

You can reference the image by a variable name, which can be anything you want, it doesn't have to match the image or anything.

Then you can render your img tag and pass that variable as the src.

Make sure to use curly braces if you're using an imported image, as using a quoted string will try to fetch a file at that location and fail.

This is because curly braces are the way to pass JS variables as props.

Imports are not handled by React, but by your bundler, which is probably Webpack if you're using Create React App.

Webpack will copy the image to the output directory with a generated unique name and replace the image src with the new path.

If the image is especially small, Webpack might even decide to inline it into the JS bundle, as an optimization.

This means the image will be embedded directly into the code, rather than being loaded separately.

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React doesn't handle imports for images, it's actually your bundler like Webpack that takes care of it.

Your bundler makes a note that a particular JavaScript file depends on a specific image file, and then copies the image to the output directory with a unique name.

This unique name is generated automatically, and the bundler replaces the original image reference in your code with the new name, like a5c8d3f89cad.jpg.

In some cases, if the image is very small, Webpack might even decide to inline it into the JavaScript bundle as an optimization.

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Images in React work a bit differently than you might expect. Imports aren't handled by React, but by your bundler, which is probably Webpack if you're using Create React App.

You need to import the image into the React component where you're using it. This alone won't make it automatically available, so you have to take this extra step. Put the image file somewhere under the src folder.

To reference the image, you can use any variable name you want, it doesn't have to match the image or anything. Then you can render your img tag and pass that variable as the src, like src={companyLogo}. Make sure to use curly braces if you're using an imported image.

The bundler, like Webpack, doesn't literally paste the image file at the import location. Instead, it makes a note that this particular JS file depends on this particular image, and then copies the image to the output directory with a generated unique name.

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To display an image in React, you can either import it into the component or put it in the public directory.

If you import the image, put it somewhere under the src folder and then import it into the React component where you're using it. You can reference it by that variable name, and use curly braces to pass the variable as the src in your img tag.

For one-off images related to the component, importing them is a good idea, as it will make the build fail if the file is missing. This way, you'll quickly find out if there's an issue.

You can also put images in the public directory, which makes them available as regular files on the web server. This is useful for generic site-wide images or when you don't want to manually import them.

If you put an image in the public folder, you can display it by referencing its path, like public/images/thing.jpg. You can even test it by opening the image in the browser using the URL http://localhost:3000/images/logo.jpg.

You can import an image via modules just like you would be importing regular components. Importing an image this way generates a string value, which can later be used in your JSX.

The image must be located somewhere in the src directory of your React project. It's a good practice to group all such files in a subdirectory called assets.

You can then import it into your application and use it as follows: import Image from './assets/harry-potter.jpg';

This should then render the image, and it's worth mentioning that for accessibility reasons you should never skip adding the alt property to the HTML image tag.