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JavaScript log() Method
Example
Return the natural logarithm of the number "2":
Math.log(2);
The result will be:
0.6931471805599453
Try it yourself »
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
The log() method is supported in all major browsers.
Syntax
Math.log(x)
Parameter Values
| Parameter | Description |
|---|---|
| x | Required. A number |
Return Value
| Type | Description |
|---|---|
| Number | The natural logarithm of a specified number |
Technical Details
| 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
0.6931471805599453
0
-Infinity
NaN
Try it yourself »
JavaScript Math Object
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