JavaScript toExponential() Method

toExponential()The method returns a string representing a Number object in exponential notation.

Syntax:

number.toExponential(fractionDigits)

Example

var num =　15;
num.toExponential();

All browsers fully support the toExponential() method:

Method
toExponential()	Is	Is	Is	Is	Is

Parameter	Description
fractionDigits	(Optional) An integer, specifying the number of digits after the decimal point

Return value:	A string, representing the number in exponential notation
Exception cases:	RangeError-If fractionDigits is too small or too large. 0 to2values between 0 and20) will not cause a RangeError TypeError-If this method is called on a non-Number object
JavaScript Version:	ECMAScript 3

Convert a number to exponential notation:

Example

var num =　15;
num.toExponential(6);