下载图片不预览

down(){letrequest=newXMLHttpRequest()request.responseType='blob'//传入文件链接//request.open('GET',this.tokenData.serverUrl+item.path)request.open('GET','https://img1.baidu.com/it/u=467403473,3088799256&fm=26&fmt=auto')request.onload=function(){leturl=window.URL.createObjectURL(this.response)leta=document.createElement('a')document.body.appendChild(a)a.href=urla.download='image'a.click()}request.send()}