JAVASCRIPT

base64 to string and string to base64 javascript decode

// base64 to string
let base64ToString = Buffer.from(obj, "base64").toString();
base64ToString = JSON.parse(base64ToString);

//or
let str = 'bmltZXNoZGV1amEuY29t';
let buff = new Buffer(str, 'base64');
let base64ToStringNew = buff.toString('ascii');

// string to base64
let data = 'nimeshdeuja.com';
let buff = new Buffer(data);
let stringToBase64 = buff.toString('base64');

js decode base64

let str = 'bmltZXNoZGV1amEuY29t';
let buff = new Buffer(str, 'base64');
let base64ToStringNew = buff.toString('utf8');

javascript base64 decode

// Define the string
var string = 'Hello World!';

// Encode the String
var encodedString = btoa(string);
console.log(encodedString); // Outputs: "SGVsbG8gV29ybGQh"

// Decode the String
var decodedString = atob(encodedString);
console.log(decodedString); // Outputs: "Hello World!"

javascript decode a sting in base64

const data = 'CodezUp';
console.log('---ORIGINAL-----', data)

// Encode String

const encode = Buffer.from(data).toString('base64')
console.log('
---ENCODED-----', encode)

// Decode String

const decode = Buffer.from(encode, 'base64').toString('utf-8')
console.log('
---DECODED-----', decode)

javascript base64 decode

var decodedString = atob(encodedString);

base64 encode in javascript

const base64Encode = (string) => {
  const newText = btoa(string);
  return newText;
};

base64 to base64url javascript

/**
 * Function that converts a base64 string into a base64url string
 * @param {string} input - The string to convert
 */
function base64ToBase64url(input) {
  // Replace non-url compatible chars with base64url standard chars and remove leading =
  return input
    .replace(/+/g, '_')
    .replace(///g, '-')
    .replace(/=+$/g, '');
}