JavaScript toExponential() Method

The toExponential() method in JavaScript is used to format a number in exponential notation. It returns a string representation of the number in exponential form, with the specified number of digits after the decimal point.

Here’s the syntax of the toExponential() method:

number.toExponential([fractionDigits])

• number: The number you want to convert to exponential notation.
• fractionDigits (optional): The number of digits to appear after the decimal point (default is as many as necessary).

The toExponential() method is available on all number values in JavaScript, and it returns a string representation of the number in exponential notation.

JavaScript toExponential() Method example

Simple example code that demonstrates the usage of the toExponential() method in JavaScript:

const number1 = 1234.5678;
const number2 = 0.012345;

console.log(number1.toExponential()); // Output: 1.2345678e+3
console.log(number1.toExponential(2)); // Output: 1.23e+3
console.log(number1.toExponential(5)); // Output: 1.23457e+3

console.log(number2.toExponential()); // Output: 1.2345e-2
console.log(number2.toExponential(2)); // Output: 1.23e-2
console.log(number2.toExponential(5)); // Output: 1.23450e-2

Output:

In the above example, we have two numbers, number1 and number2. The toExponential() method is called on these numbers with different fractionDigits values.

Do comment if you have any doubts or suggestions on this Js method.

Note: The All JS Examples codes are tested on the Firefox browser and the Chrome browser.

OS: Windows 10

Code: HTML 5 Version