JavaScript Math log() Method (original) (raw)

Last Updated : 29 Jul, 2024

The JavaScript **Math log( ) Method is used to return the natural logarithm (base e) of a number. The JavaScript Math.log() method is equivalent to ln(x) in mathematics. If the value of x is negative, then the math.log() method return NaN. The log() is a static method of Math, therefore, it is always used as Math.log(), rather than as a method of a Math object created.

**Syntax:

Math.log(value)

**Parameters:

This method accepts a single parameter as mentioned above and described below:

**Return value:

The Math.log() method returns the natural logarithm given number.

**Example 1: Below are examples of the Math log() Method.

JavaScript `

console.log("When zero is passed as a parameter: " + Math.log(0));

`

**Output:

When zero is passed as a parameter: -Infinity

**Example 2: When “-1” is passed as a parameter.

javascript `

console.log("Result: " + Math.log(-1));

`

**Output:

Output : NaN

**Example 3: When “10” is passed as a parameter.

javascript `

console.log("Result : " + Math.log(10));

`

**Output:

Result : 2.302585092994046

**Example 4: Calculating Math.log() with a different base. For finding the logarithm of 8 with base 2, execute the math.log() method in the following way:

javascript `

console.log("Result : " + Math.log(8)/Math.log(2));

`

**Output:

Output : 3

We have a complete list of Javascript Math Objects methods, to check those please go through this Javascript Math Object Complete reference article.

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