Below is the example of the Math log() Method.
- Example:
<scripttype="text/javascript">document.write("When zero is passed as a parameter: "+ Math.log(0));</script> - Output:
When zero is passed as a parameter: -Infinity
The Math.log() method 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 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:
- value: This parameter holds a number whose natural logarithm you want to find.
Return value: The Math.log() method returns the natural logarithm given number.
More codes for the above method are as follows:
Program 1: When “-1” is passed as a parameter.
<script type="text/javascript"> document.write("Result: " + Math.log(-1)); </script> |
Output:
Output : NaN
Program 12: When “10” is passed as a parameter.
<script type="text/javascript"> document.write("Result : " + Math.log(10)); </script> |
Output:
Result : 2.302585092994046
Program 3: 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:
<script type="text/javascript"> document.write("Result : " + Math.log(8)/Math.log(2)); </script> |
Output:
Output : 3
Supported Browsers:
- Google Chrome
- Internet Explorer
- Firefox
- Opera
- Safari
