# JavaScript: Compute the value of bn where n is the exponent and b is the bases

## JavaScript Function: Exercise-15 with Solution

Write a JavaScript function to compute the value of bn where n is the exponent and b is the bases. Accept b and n from the user and display the result.

Sample Solution: -

HTML Code:

``````<!DOCTYPE html>
<html>
<meta charset=utf-8 />
<title>Compute the value of bn where n is the exponent and b is the bases</title>
<body>
</body>
</html>
```
```

JavaScript Code:

``````function exp(b,n)
{
var ans = 1;
for (var i =1; i <= n; i++)
{
ans = b * ans;
}
return ans;
}
console.log(exp(2, 3));
```
```

Sample Output:

```8
```

Flowchart:

Live Demo:

See the Pen JavaScript - Compute the value of bn where n is the exponent and b is the bases-function-ex- 15 by w3resource (@w3resource) on CodePen.

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## 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