# Exponentiation (**) in JavaScript

In mathematics, exponentiation is a way to multiply a number by itself a certain number of times (or phrased differently, to the power of the second operand).

In JavaScript, the exponentiation operator is represented by two asterisks (`**`).

It's also a more concise and readable alternative to the older `Math.pow()` method.

## How to Use It?

Here's the basic format:

```base ** exponent
```
• `base` is the number you want to multiply.
• `exponent` is the number of times you want to multiply the base by itself.

Example:

```2 ** 3 // This equals 8 because 2 multiplied by itself 3 times is 2 * 2 * 2 = 8.
```

## More examples 🧠

• `3 ** 2` will give you `9` because 3 multiplied by itself is 9.
• `5 ** 3` will give you `125` because 5 multiplied by itself 3 times is 125.
• `10 ** 0` will give you `1` because any number raised to the power of 0 is always 1.

## Math.pow()

In case you haven't used it in JavaScript, before exponential operators, we used the `Math.pow()` method to calculate powers.

For example:

```Math.pow(2, 3) // This also equals 8.
```

But I think with the `**` operator, the code becomes shorter and more readable.

## Tips:

• If you use a negative exponent, the result will be a fraction. For example, `2 ** -3` is `1/8`.
• Always remember the order: the base comes before the `**`, and the exponent comes after.
• Unlike `Math.pow()`, the exponential operator allows you to use `BigInt` values.

Happy coding! 🪄

JavaScriptJS

#### Written byNiall Maher

Founder of Codú - The web developer community! I've worked in nearly every corner of technology businesses; Lead Developer, Software Architect, Product Manager, CTO and now happily a Founder.