js下载文件

let blob = new Blob([res], {

type: 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet;charset=utf-8'

})

let link = document.createElement('a')

link.href = window.URL.createObjectURL(blob)

link.download = '66'

link.click()

window.URL.revokeObjectURL(link.href)