const link = document.createElement('a')
link.setAttribute("download", "xxxxxx") //下载的文件名
link.href =url //文件url 路径必须是完整路径
link.click()
const link = document.createElement('a')
link.setAttribute("download", "xxxxxx") //下载的文件名
link.href =url //文件url 路径必须是完整路径
link.click()