Javascript ArrayBuffer to Hex

Question

I've got a Javascript ArrayBuffer that I would like to be converted into a hex string.

Anyone knows of a function that I can call or a pre written function already out there?

I have only been able to find arraybuffer to string functions, but I want the hexdump of the array buffer instead.

question from:https://stackoverflow.com/questions/40031688/javascript-arraybuffer-to-hex

Answer 1

function buf2hex(buffer) { // buffer is an ArrayBuffer
  return [...new Uint8Array(buffer)]
      .map(x => x.toString(16).padStart(2, '0'))
      .join('');
}

// EXAMPLE:
const buffer = new Uint8Array([ 4, 8, 12, 16 ]).buffer;
console.log(buf2hex(buffer)); // = 04080c10