Handle file download from ajax post

Question

I have a javascript app that sends ajax POST requests to a certain URL. Response might be a JSON string or it might be a file (as an attachment). I can easily detect Content

Answer 1

If response is an Array Buffer, try this under onsuccess event in Ajax:

 if (event.data instanceof ArrayBuffer) {
          var binary = '';
          var bytes = new Uint8Array(event.data);
          for (var i = 0; i < bytes.byteLength; i++) {
              binary += String.fromCharCode(bytes[i])
          }
          $("#some_id").append("
");
          return;
      }

• where event.data is response received in success function of xhr event.