React.js 上 img 的正确路径

Question

I have some problem with my images on my react project. Indeed I always thought that relative path into src attribute was built on the files architecture

Here my files architecture:

components
    file1.jsx
    file2.jsx
    file3.jsx
container
img
js 
... 

However I realized that the path is built on the url. In one of my component (for example into file1.jsx) I have this:

localhost/details/2
<img src="../img/myImage.png" /> -> works

localhost/details/2/id
<img src="../img/myImage.png" /> -> doesn't work, images are not displayed

How is it possible to solve this problem? I want that in any form of routes handled by react-router, all images can be displayed with the same path.

Answer 1

In create-react-app relative paths for images don't seem to work. Instead, you can import an image:

import logo from './logo.png' // relative path to image 

class Nav extends Component { 
    render() { 
        return ( 
            <img src={logo} alt={"logo"}/> 
        )  
    }
}

Answer 2

If you used create-react-app to create your project then your public folder is accessible. So you need to add your image folder inside the public folder.

public/images/

<img src="/images/logo.png" />

Answer 3

You're using a relative url, which is relative to the current url, not the file system. You could resolve this by using absolute urls

<img src ="http://localhost:3000/details/img/myImage.png" />

But that's not great for when you deploy to www.my-domain.bike, or any other site. Better would be to use a url relative to the root directory of the site

<img src="/details/img/myImage.png" />

Answer 4

With create-react-app there is public folder (with index.html ...). If you place your "myImage.png" there, say under img sub-folder, then you can access them through:

<img src={window.location.origin + '/img/myImage.png'} />

Answer 5

1. Make an images folder inside src(/src/images) And keep your image in it. Then import this image in your component(use your relative path). Like below-

   import imageSrc from './images/image-name.jpg';

   And then in your component.

   <img title="my-img" src={imageSrc} alt="my-img" />

2. Another way is to keep images in public folder and import them using relative path. For this make an image folder in public folder and keep your image in it. And then in your component use it like below.

   <img title="my-img" src='/images/my-image.jpg' alt="my-img" />

   Both method work but first one is recommended because its cleaner way and images are handled by webpack during build time.

Answer 6

如果图像放在“src”文件夹中，请使用以下内容：

<img src={require('../logo.png')} alt="logo" className="brand-logo"/>

Answer 7

Some older answers din't work, others are good but won't explain the theme, in summary:

If image is in 'public' directory

Example: \\public\\charts\\a.png

In html:

<img id="imglogo" src="/charts/logo.svg" />

In JavaScript:

Create image to new img, dynamically:

var img1 = document.createElement("img");  
img1.src = 'charts/a.png';  

Set image to existing img with id as 'img1', dynamically:

document.getElementById('img1').src = 'charts/a.png';

If image is in 'src' directory:

Example: \\src\\logo.svg

In JavaScript:

import logo from './logo.svg';  
img1.src = logo;  

In jsx:

<img src={logo} /> 

Answer 8

Adding file-loader npm to webpack.config.js per its official usage instruction like so:

config.module.rules.push(
    {
        test: /\.(png|jpg|gif)$/,
        use: [
            {
                loader: 'file-loader',
                options: {}
            }
        ]
    }
);

worked for me.

Answer 9

Import Images in your component

import RecentProjectImage_3 from '../../asset/image/recent-projects/latest_news_3.jpg'

And call the image name on image src={RecentProjectImage_3} as a object

 <Img src={RecentProjectImage_3} alt="" />

Answer 10

A friend showed me how to do this as follows:

"./" works when the file requesting the image (eg, "example.js") is on the same level within the folder tree structure as the folder "images".

Answer 11

Place the logo in your public folder under eg public/img/logo.png and then refer to the public folder as %PUBLIC_URL%:

<img src="%PUBLIC_URL%/img/logo.png"/>

The use of %PUBLIC_URL% in the above will be replaced with the URL of the public folder during the build. Only files inside the public folder can be referenced from the HTML.

Unlike "/img/logo.png" or "logo.png", "%PUBLIC_URL%/img/logo.png" will work correctly both with client-side routing and a non-root public URL. Learn how to configure a non-root public URL by running npm run build .

Answer 12

If your page url contains multiple / then in src go back / count minus 1 times.

For example page url http://localhost:3000/play/game/ then src url must be ../your-image-folder/image-name . And your your-image-folder must be in public folder.

Answer 13

I have used it this way and it worked perfectly

import Product from "../../images/product-icon.png";
import { Icon } from "@material-ui/core";

<Icon>
    <img src={Product} style={{ width: "21px", height: "24px" }} />
</Icon>

Answer 14

I create my app with create-react-app and I use require instruction if I want to change dynamically my image src:

export const MyComponent = () => {
  const [myImg, setMyImg] = useState(require('./path/to/my/img'));

  const handleClick = () => {
    setMyImg(require('./path/to/other/img'));
  }

  return (
    <div>
      <img src={myImg} alt='myImg' />
      <button onClick={handleClick}>Click me!<button/>
    <div>
  )
}