GitHub - murongg/vue3-lazyload: A Vue3.x image lazyload plugin (original) (raw)

vue3-lazyload

A vue3.x image lazyload plugin.

🚀 Features

📎 Installation

$ npm i vue3-lazyload

or

$ yarn add vue3-lazyload

🌎 CDN

CDN: https://unpkg.com/vue3-lazyload

👽 Usage

main.js:

import { createApp } from 'vue' import VueLazyLoad from 'vue3-lazyload' import App from './App.vue'

const app = createApp(App) app.use(VueLazyLoad, { // options... }) app.mount('#app')

App.vue:

v-lazy use object params

Use lifecycle

In main.js

import { createApp } from 'vue' import VueLazyLoad from 'vue3-lazyload' import App from './App.vue'

const app = createApp(App) app.use(VueLazyLoad, { loading: '', error: '', lifecycle: { loading: (el) => { console.log('loading', el) }, error: (el) => { console.log('error', el) }, loaded: (el) => { console.log('loaded', el) } } }) app.mount('#app')

or

In xxx.vue

Have to be aware of is v-lazy don't use v-lazy="lazyOptions", in this case, vue cannot monitor data changes.

Use Hook

Use css state

There are three states while image loading.
You can take advantage of this feature, make different css controls for different states.

Delay loading of images

To avoid loading images that are only shortly visible (e. g. fast scrolling through list of images), a delay in milliseconds can be configured. If a delay is set, an image is only loaded if it stays visible for the specified amount of time.

Set delay in object parameter:

📁 Options

key description default type
loading The image used when the image is loaded - string
error The image used when the image failed to load - string
observerOptions IntersectionObserver options { rootMargin: '0px', threshold: 0.1 } IntersectionObserverInit
log Do print debug info true boolean
logLevel Log level error 'error' | 'warn' 'info' 'debug' 'log'
lifecycle Specify state execution function - Lifecycle
delay Time in milliseconds an image has to stay visible before loading starts 0 number

⛱ Lifecycle Hooks

key description
loading Image loading
loaded Image loaded
error Image load error

Contributors

Contributors