How to reference static assets within vue javascri

问题:

I'm looking for the right url to reference static assets, like images within Vue javascript.

For example, I'm creating a leaflet marker using a custom icon image, and I've tried several urls, but they all return a 404 (Not Found):

Main.vue:

var icon = L.icon({
    iconUrl: './assets/img.png',
    iconSize:     [25, 25],
    iconAnchor:   [12, 12]
});

I've tried putting the images in the assets folder and the static folder with no luck. Do I have to tell vue to load those images somehow?

回答1:

For anyone looking to refer images from template, You can refer images directly using '@'

Example:

<img src="@/assets/images/home.png"/>

回答2:

In a Vue regular setup, /assets is not served.

The images become src="data:image/png;base64,iVBORw0K...YII=" strings, instead.

Using from within JavaScript: require()

To get the images from JS code, use require('../assets.myImage.png'). The path must be relative (see below).

So your code would be:

var icon = L.icon({
    iconUrl: require('./assets/img.png'),   // was iconUrl: './assets/img.png',
//  iconUrl: require('@/assets/img.png'), // use @ as alternative, depending on the path
    // ...
});

Use relative path

For example, say you have the following folder structure:

- src
  +- assets
     - myImage.png
  +- components
     - MyComponent.vue

If you want to reference the image in MyComponent.vue, the path sould be ../assets/myImage.png

Here's a DEMO CODESANDBOX showing it in action.

回答3:

In order for Webpack to return the correct asset paths, you need to use require('./relative/path/to/file.jpg'), which will get processed by file-loader and returns the resolved URL.

computed: {
  iconUrl () {
    return require('./assets/img.png')
    // The path could be '../assets/img.png', etc., which depends on where your vue file is
  }
}

See VueJS templates - Handling Static Assets

回答4:

Right after oppening script tag just add import someImage from '../assets/someImage.png' and use it for an icon url iconUrl: someImage

回答5:

A better solution would be

Adding some good practices and safity to @acdcjunior's answer, to use @ instead of ./

In JavaScript

require("@/assets/images/user-img-placeholder.png")

In JSX Template

<img src="@/assets/images/user-img-placeholder.png"/>

using @ points to the src directory.

using ~ points to the project root, which makes it easier to access the node_modules and other root level resources

回答6:

What system are you using? Webpack? Vue-loader?

I'll only brainstorming here...

Because .png is not a JavaScript file, you will need to configure Webpack to use file-loader or url-loader to handle them. The project scaffolded with vue-cli has also configured this for you.

You can take a look at webpack.conf.js in order to see if it's well configured like

...
    {
        test: /\.(png|jpe?g|gif|svg)(\?.*)?$/,
        loader: 'url-loader',
        options: {
          limit: 10000,
          name: utils.assetsPath('img/[name].[hash:7].[ext]')
        }
      },
...

/assets is for files that are handles by webpack during bundling - for that, they have to be referenced somewhere in your javascript code.

Other assets can be put in /static, the content of this folder will be copied to /dist later as-is.

I recommend you to try to change:

iconUrl: './assets/img.png'

to

iconUrl: './dist/img.png'

You can read the official documentation here: https://vue-loader.vuejs.org/en/configurations/asset-url.html

Hope it helps to you!

回答7:

Having a default structure of folders generated by Vue CLI such as src/assets you can place your image there and refer this from HTML as follows <img src="../src/assets/img/logo.png"> as well (works automatically without any changes on deployment too).