Converting a Byte Array to String with Buffer in Node.JS

If you're working with Node.JS, you may have encountered Buffers which are a way to store binary data as a sequence of its bytes.

But what happens when you have serialised it, and you want to convert it back to a String?

Let us assume that we have the following data:

[
  104, 116, 116, 112, 115,
  58, 47, 47, 119, 119,
  119, 46, 106, 118, 116,
  46, 109, 101
]

We can use Buffer.from to read in the bytes, and then return it as a String:

const bytes = [
  104, 116, 116, 112, 115,
  58, 47, 47, 119, 119,
  119, 46, 106, 118, 116,
  46, 109, 101
];
console.log(new Buffer.from(bytes).toString());
// 'https://www.jvt.me'

Written by Jamie Tanna's profile image Jamie Tanna on , and last updated on .

Content for this article is shared under the terms of the Creative Commons Attribution Non Commercial Share Alike 4.0 International, and code is shared under the Apache License 2.0.

#blogumentation #nodejs.

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