Vue自定义指令结合阿里云OSS优化图片的实现方法

Vue.directive('img-condense', {
 bind: (el, binding, vnode) => {
  let src = el.getAttribute('src')
  let newSrc = compressImg(src, el)
  el.setAttribute('src', newSrc)
 }
})

let compressImg = (imgUrl, el) => {
 // 获取显示设备 pixelRatio
 let pixelRatio = window.devicePixelRatio
 let elWidth = elStyle.width * pixelRatio
 let elHeight = elStyle.height * pixelRatio
 let resize = '/resize'
 if (elWidth) {
  resize += `,w_${elWidth}`
 }
 if (elHeight) {
  resize += `,h_${elHeight}`
 }
})

let canUseWebp = document.createElement('canvas').toDataURL('image/webp').indexOf('data:image/webp') == 0
let webp = ''
if (canUseWebp) {
 webp = '/format,webp'
}

let ossParam"htmlcode">

<img v-img-condense alt="Vue logo" src="/UploadFiles/2021-04-02/logo.png">

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。