edge浏览器导出execl只能选中.txt格式

export function downloadFile(obj, name, suffix) {
//obj是字符流 name是文件名，suffix是文件后缀传递的参数可根据个人情况
  if (window.navigator.msSaveOrOpenBlob) {
    // 兼容IE
    const blob = new Blob([obj]);
    const fileName = parseTime(new Date()) + ‘-‘ + name + ‘.‘ + suffix
    navigator.msSaveBlob(blob, fileName);
  } else {
    const url = window.URL.createObjectURL(new Blob([obj]))
    const element = document.createElement(‘a‘)
    element.style.display = ‘none‘
    element.href = url
    const fileName = parseTime(new Date()) + ‘-‘ + name + ‘.‘ + suffix
    element.setAttribute(‘download‘, fileName)
    document.body.appendChild(element)
    element.click()
    document.body.removeChild(element)
  }

}