<a @click="downCom" >
下载执照
<i class="icon-down"></i>
</a>
1
2 downCom() {
3 let that = this;
4 this.$http.files().then(res => {
5 let hreLocal="" 6 hreLocal = res.data.data.url;
7 this.downloadByBlob(hreLocal,"pic")
8
9 });
10 },
1 downloadByBlob(url,name) {
2 let image = new Image()
3 image.setAttribute('crossOrigin','anonymous' 4 image.src = url
5 image.onload = () => 6 let canvas = document.createElement('canvas' 7 canvas.width = image.width
8 canvas.height = image.height
9 let ctx = canvas.getContext('2d'10 ctx.drawImage(image,0,image.width,image.height)
11 canvas.toBlob((blob) =>12 let url = URL.createObjectURL(blob)
13 download(url,name)
14 // 用完释放URL对象
15 URL.revokeObjectURL(url)
16 })
17 }
18 },
1 function download(href,1)">2 let eleLink = document.createElement('a'3 eleLink.download = name
4 eleLink.href = href
5 eleLink.click()
6 eleLink.remove()
7 }
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