JavaScript log() Method
Example
Return the natural logarithm of the number "2":
Math.log(2);
The result will be:
0.6931471805599453
Try it Yourself »
More "Try it Yourself" examples below.
Definition and Usage
The log() method returns the natural logarithm (base E) of a number.
Note: If the parameter x is negative, NaN is returned.
Note: If the parameter x is 0, -Infinity is returned.
Browser Support
| Method | |||||
|---|---|---|---|---|---|
| log() | Yes | Yes | Yes | Yes | Yes |
Syntax
Math.log(x)
Parameter Values
| Parameter | Description |
|---|---|
| x | Required. A number |
Technical Details
| Return Value: | A Number, representing the natural logarithm of a specified number |
|---|---|
| JavaScript Version: | 1.0 |
More Examples
Example
Use the log() method on different numbers:
var a = Math.log(2.7183);
var b = Math.log(2);
var c = Math.log(1);
var d = Math.log(0);
var e = Math.log(-1);
var b = Math.log(2);
var c = Math.log(1);
var d = Math.log(0);
var e = Math.log(-1);
The result of a,b,c,d, and e will be:
1.0000066849139877
0.6931471805599453
0
-Infinity
NaN
Try it Yourself »
0.6931471805599453
0
-Infinity
NaN
JavaScript Math Object
