JavaScript: Compute the exponent of a number

JavaScript Function: Exercise-5 with Solution

Write a JavaScript program to compute the exponent of a number.

Note: The exponent of a number says how many times the base number is used as a factor.
82 = 8 x 8 = 64. Here 8 is the base and 2 is the exponent.

Pictorial Presentation:

JavaScript: Compute the exponent of a number

Sample Solution:-

HTML Code:

<!DOCTYPE html>
  <meta charset="utf-8">
  <title>Exponent of a number</title>


JavaScript Code:

var exponent = function(a, n) 
   if (n === 0) 
    return 1;
    return a * exponent(a, n-1);

console.log(exponent(4, 2));




Flowchart: JavaScript recursion function- Compute the exponent of a number

Live Demo:

See the Pen javascript-recursion-function-exercise-5 by w3resource (@w3resource) on CodePen.

Improve this sample solution and post your code through Disqus

Previous: Write a JavaScript program to compute the sum of an array of integers.
Next: Write a JavaScript program to get the first n Fibonacci numbers.

What is the difficulty level of this exercise?

Test your Programming skills with w3resource's quiz.

Share this Tutorial / Exercise on : Facebook and Twitter

JavaScript: Tips of the Day

Log the values that are commented out after the console.log statement

function* startGame() {
  const answer = yield 'Do you love JavaScript?';
  if (answer !== 'Yes') {
    return "Oh wow... Guess we're gone here";
  return 'JavaScript loves you back ?';

const game = startGame();
console.log(/* 1 */); // Do you love JavaScript?
console.log(/* 2 */); // JavaScript loves you back ?

A generator function "pauses" its execution when it sees the yield keyword. First, we have to let the function yield the string "Do you love JavaScript?", which can be done by calling game.next().value.
Every line is executed, until it finds the first yield keyword. There is a yield keyword on the first line within the function: the execution stops with the first yield! This means that the variable answer is not defined yet!
When we call game.next("Yes").value, the previous yield is replaced with the value of the parameters passed to the next() function, "Yes" in this case. The value of the variable answer is now equal to "Yes". The condition of the if-statement returns false, and JavaScript loves you back ? gets logged.

Ref: https://bit.ly/3jFRBje