[JS] Download file

download.js

function download(data, filename, type) {
  var a = document.createElement('a')
  var file = new Blob([data], { type: type })
  if (window.navigator.msSaveOrOpenBlob) // IE10+
    window.navigator.msSaveOrOpenBlob(file, filename)
  else { // Others
    var url = URL.createObjectURL(file)
    a.href = url
    a.download = filename
    document.body.appendChild(a)
    a.click();
    setTimeout(function () {
      document.body.removeChild(a);
      window.URL.revokeObjectURL(url);
    }, 0);
  }
}