Access Buffer - Javascript-CodePudding

I have this very simple code written in javascript.

 let str = "Hello World";
console.log(Buffer.from(str,"utf-8"));

result: <Buffer 48 65 6c 6c 6f 20 57 6f 72 6c 64>

How can i get the bytes from the Buffer? So result will look like this

expected result 48656c6c6f20576f726c64

CodePudding user response：

Node's Buffer includes a toString method for this purpose. You can supply the desired encoding format as the first argument. In your case, you can use "hex" meaning hexadecimal:

const str = 'Hello World';
const buf = Buffer.from(str, 'utf-8');
const hex = buf.toString('hex');
console.log(hex === '48656c6c6f20576f726c64'); // true

CodePudding user response：

Basically you iterate the values since Buffer has that method and more. It's quite array-like. Use toString(16) to convert to hex.

let str = "Hello World";
var buf = Buffer.from(str, "utf-8");
var result = [];
buf.forEach(function(value) {
  result.push(value.toString(16))
})

console.log(result.join(""));