How to convert a JavaScript string to byte array using ASCII encoding?

In C#, it is done as:

 var encoding = new System.Text.ASCIIEncoding();
 byte[] keyByte = encoding.GetBytes(string); 

I want to do the same in JavaScript for my nodejs server

How to convert a JavaScript string to byte array using ASCII encoding?

In C#, it is done as:

 var encoding = new System.Text.ASCIIEncoding();
 byte[] keyByte = encoding.GetBytes(string); 

I want to do the same in JavaScript for my nodejs server

• javascript
• node.js
• encoding
• ascii

• You need to post the code you have already tried and explain where you are getting stuck. Please read [How to Ask a Good Question] and include an minimal reproducible example in your question – Tibrogargan Commented Jul 29, 2016 at 6:30
• nodejs.org/api/… – Bergi Commented Jul 29, 2016 at 8:58

2 Answers 2

For Node.js this is fairly easy:

var keyByte = new Buffer(string, "ascii");

Buffer is a container of bytes, and can be treated as an array:

var bytes = new Buffer("Hello, world", "ascii");
console.log(bytes[3]);  //writes 108

Most of the network and filesystem APIs take and return buffers

Update for NodeJS

const str = 'Hello world';
const buf = Buffer.from(str, 'ascii');
console.log(buf.toString('hex'));
console.log(buf.toString('base64'));