JavaScript log()Method
JavaScript Math ObjectExample
Return the natural logarithm of 2:
Math.log(2);
Output:
0.6931471805599453
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Definition and Usage
The log() method returns the natural logarithm of a number (based on E).
Note:If x is negative, it returnsNaN。
Note:If x is 0, it returns-Infinity 。
Browser Support
All major browsers support the log() method
Syntax
Math.log(x)
Parameter Values
| Parameter | Description |
|---|---|
| x | Required. Any numeric value or expression. |
Return Value
| Type | Description |
|---|---|
| Number | The natural logarithm of x. |
Technical Details
| JavaScript Version: | 1.0 |
|---|
More Examples
Example
In this example, we will apply log() to 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);
a,b,c,d, andeOutput:
1.0000066849139877
0.6931471805599453
0
-Infinity
NaN
0.6931471805599453
0
-Infinity
NaN
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