通过iframe下载文件

//iframe下载文件
function downloadFileByIfr(downLoadUrl) {
  // 移除旧的节点
  const oldNode = document.querySelector("#g-exportOrder-iframe")
  if (oldNode) {
    document.body.removeChild(document.querySelector("#g-exportOrder-iframe"))
  }
  // 生成新节点，进行下载
  const iframe = document.createElement("iframe")
  iframe.style.display = "none"
  iframe.id = "g-exportOrder-iframe"
  iframe.src = downLoadUrl
  document.body.appendChild(iframe)
}