JavaScript: Check if a given number is even or not
JavaScript fundamental (ES6 Syntax): Exercise-202 with Solution
Write a JavaScript program to check if a given number is even or not.
- Checks whether a number is odd or even using the modulo (%) operator.
- Returns true if the number is even, false if the number is odd.
Sample Solution:
JavaScript Code:
//#Source https://bit.ly/2neWfJ2
const isEven = num => num % 2 === 0;
console.log(isEven(3));
console.log(isEven(32));
console.log(isEven(1));
console.log(isEven(0));
Sample Output:
false true false true
Flowchart:

Live Demo:
See the Pen javascript-basic-exercise-202-1 by w3resource (@w3resource) on CodePen.
Improve this sample solution and post your code through Disqus
Previous: Write a JavaScript program to check if the first numeric argument is divisible by the second one.
Next: Write a JavaScript program to determine if the current runtime environment is a browser so that front-end modules can run on the server (Node) without throwing errors.
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