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Showing content from https://webplatform.github.io/docs/javascript/Math/log below:

log · WebPlatform Docs

log Summary

Returns the natural logarithm (base e ) of a number.

Syntax

Math.log( number )

number: A number.

Return Value

If number is positive, this function returns the natural logarithm of the number. If number is negative, this function returns NaN. If number is 0, this function returns -Infinity.

Examples

The following code shows how to use this function.

var numArr = [ 45.3, 69.0, 557.04, 0.222 ];

 for (i in numArr) {
     document.write(Math.log(numArr[i]));
     document.write("<br/>");
 }