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# What is the toExponential() method in TypeScript? Gutha Vamsi Krishna

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### Overview

The toExponential() method is used to convert a number into an exponential notation.

### Syntax

Here is the syntax of the toExponential() method:

number.toExponential(x)

### Parameter value

This method takes a number as a parameter to represent the number of digits after a decimal point. The number must be in the range of 0 to 20.

### Return value

​​This method returns a string value that represents the exponential notation of a given number.

Let's look at an example of this.

### Example

let num = 6.57769;//no.of digits after decimal is 1console.log(num.toExponential(1))//no.of digits after decimal is 3console.log(num.toExponential(3))//no.of digits after decimal is 8console.log(num.toExponential(8))

### Explanation

• Line 1: We declare and initialize the number num.
• Line 4: We convert the given number num to an exponential form, which has 1 digit after the decimal point.
• Line 7: We convert the given number num to an exponential form, which has 3 digits after the decimal point.
• Line 10: We convert the given number num to an exponential form, which has 8 digits after the decimal point.

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CONTRIBUTOR Gutha Vamsi Krishna

Grokking Modern System Design Interview for Engineers & Managers

Ace your System Design Interview and take your career to the next level. Learn to handle the design of applications like Netflix, Quora, Facebook, Uber, and many more in a 45-min interview. Learn the RESHADED framework for architecting web-scale applications by determining requirements, constraints, and assumptions before diving into a step-by-step design process.

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