# JavaScript: Return values that are powers of two

## JavaScript Math: Exercise-36 with Solution

Write a JavaScript function to return powers of two values.

Test Data :

console.log(isPower_of_two(64));

true

console.log(isPower_of_two(94));

false

**Sample Solution:**

**JavaScript Code:**

```
// Define a function named isPower_of_two that checks if a given number is a power of two.
function isPower_of_two(num)
{
// Check if num is not zero and if num bitwise AND with (num - 1) equals zero.
// This condition checks if num has only one bit set to 1, which indicates it is a power of two.
return num && (num & (num - 1)) === 0;
}
// Output the result of checking if 64 is a power of two to the console.
console.log(isPower_of_two(64));
// Output the result of checking if 94 is a power of two to the console.
console.log(isPower_of_two(94));
```

Output:

true false

**Visual Presentation:**

**Flowchart:**

**Live Demo: **

See the Pen javascript-math-exercise-36 by w3resource (@w3resource) on CodePen.

**Improve this sample solution and post your code through Disqus.**

**Previous:** Write a JavaScript function for the Pythagorean theorem.

**Next:** Write a JavaScript function to limit a value inside a certain range.

**What is the difficulty level of this exercise?**

Test your Programming skills with w3resource's quiz.

**Weekly Trends and Language Statistics**- Weekly Trends and Language Statistics