How to save an array buffer to a local file on disk using javascript

Question

I'm practicing in programming with websocket, i'm building a java websocket server and want to send a binary data to websocket client, then client side can get that data through websocket and save it to a local file on disk, but i don't know what way using javascript to write an arraybuffer into a file. My example code is shown below

var ws = new WebSocket(URL);
ws.binaryType = "arraybuffer";
ws.onmessage = function(evt) {
     if (evt.data instanceOf ArrayBuffer) {
         // binary message is riecieved from server and i want to save it as a local file 
     
     }
};

Thank you for any help

try to post with a code that you have tried and faced problems with that — Sourav
– Sourav, Commented Feb 23, 2020 at 6:10

anthumchris · Accepted Answer · 2020-04-22 23:36:18Z

1

You can create a textual/string representation that can be saved to and read from a file:

// returns String
function getArrayBufferString(arrayBuffer) {
  return new Uint8Array(arrayBuffer).toString()
}

// returns ArrayBuffer
function parseArrayBufferString(string) {
  return new Uint8Array(string.split(',')).buffer
}

answered Apr 22, 2020 at 23:36

anthumchris

9,2472 gold badges35 silver badges60 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

How to save an array buffer to a local file on disk using javascript

1 Answer 1

Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related