JavaScript - Math log Method
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Description
This method returns the natural logarithm (base E) of a number. If the value of number is negative, the return value is always NaN.
Syntax
Its syntax is as follows −
Math.log( x ) ;
Parameter Details
x − A numbers.
Return Value
Returns the natural logarithm (base E) of a number.
Example
Try the following example program.
Live Demo<html> <head> <title>JavaScript Math log() Method</title> </head> <body> <script type = "text/javascript"> var value = Math.log(10); document.write("First Test Value : " + value ); var value = Math.log(0); document.write("<br />Second Test Value : " + value ); var value = Math.log(-1); document.write("<br />Third Test Value : " + value ); var value = Math.log(100); document.write("<br />Fourth Test Value : " + value ); </script> </body> </html>
Output
First Test Value : 2.302585092994046 Second Test Value : -Infinity Third Test Value : NaN Fourth Test Value : 4.605170185988092
javascript_math_object.htm
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