一、代码

this.downloadFile(url, name)

downloadFile(url, filename) {
  const xhr = new XMLHttpRequest()
  xhr.open('GET', url, true)
  xhr.responseType = 'blob'
  xhr.onload = function () {
      if (xhr.status === 200) {
          const blob = new Blob([xhr.response], { type: 'audio/mp3' })
          const link = document.createElement('a')
          link.href = window.URL.createObjectURL(blob)
          link.download = filename
          link.click()
      }
  }
  xhr.send()
},

别看了，没了，就这么简单~