目录

JavaScript Math.log()

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Examples

let x = Math.log(2);

Try it Yourself »

let a = Math.log(2.7183);
let b = Math.log(2);
let c = Math.log(1);
let d = Math.log(0);
let e = Math.log(-1);

Try it Yourself »

Description

The Math.log() method returns the natural logarithm (base E) of a number.

JavaScript Logarthmic Functions:

The Math.log() Method
The Math.log2() Method
The Math.log10() Method
The Math.log1p() Method

Logarthmic Properies:

The Math.LN2 Property
The Math.LN10 Property
The Math.LOG2E Property
The Math.LOG10E Property

Exponential Functions:

The Math.E Property (Euler's Number)
The Math.exp() Method
The Math.expm1() Method

Syntax

Math.log( x)

Parameters

Parameter	Description
x	Required. A number.

Return Value

Type	Description
Number	The natural logarithm of the number. `NaN` if the number is negative. `-Infinity` if the number is 0.

Related Pages:

JavaScript Math

JavaScript Numbers

JavaScript Number Reference

Browser Support

Math.log() is an ECMAScript1 (ES1) feature.

ES1 (JavaScript 1997) is fully supported in all browsers:


Chrome	Edge	Firefox	Safari	Opera	IE
Yes	Yes	Yes	Yes	Yes	Yes

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