JavaScript: Decode a string of data which has been encoded using base-64 encoding
JavaScript fundamental (ES6 Syntax): Exercise-259 with Solution
Write a JavaScript program to decode a string of data which has been encoded using base-64 encoding.
Note: Create a Buffer for the given string with base-64 encoding and use Buffer.toString('binary') to return the decoded string.
- Create a Buffer for the given string with base-64 encoding and use Buffer.toString('binary') to return the decoded string.
Sample Solution:
JavaScript Code:
//#Source https://bit.ly/2neWfJ2
const atob = str => new Buffer(str, 'base64').toString('binary');
console.log(atob('Zm9vYmFy'));
Flowchart:

Improve this sample solution and post your code through Disqus
Previous: Write a JavaScript program to create a function that accepts up to n arguments, ignoring any additional arguments.
Next: Write a JavaScript program to evaluate the binomial coefficient of two integers n and k.
What is the difficulty level of this exercise?
Test your Programming skills with w3resource's quiz.
JavaScript: Tips of the Day
How to check whether a string contains a substring in JavaScript?
ECMAScript 6 introduced String.prototype.includes:
const string = "foo"; const substring = "oo"; console.log(string.includes(substring));
includes doesn't have Internet Explorer support, though. In ECMAScript 5 or older environments, use String.prototype.indexOf, which returns -1 when a substring cannot be found:
var string = "foo"; var substring = "oo"; console.log(string.indexOf(substring) !== -1);
Ref: https://bit.ly/3fFFgZv
- New Content published on w3resource:
- HTML-CSS Practical: Exercises, Practice, Solution
- Java Regular Expression: Exercises, Practice, Solution
- Scala Programming Exercises, Practice, Solution
- Python Itertools exercises
- Python Numpy exercises
- Python GeoPy Package exercises
- Python Pandas exercises
- Python nltk exercises
- Python BeautifulSoup exercises
- Form Template
- Composer - PHP Package Manager
- PHPUnit - PHP Testing
- Laravel - PHP Framework
- Angular - JavaScript Framework
- Vue - JavaScript Framework
- Jest - JavaScript Testing Framework