Math.log10()
The Math.log10()
static method returns the base 10 logarithm of a number. That is
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Syntax
js
Math.log10(x)
Parameters
x
-
A number greater than or equal to 0.
Return value
The base 10 logarithm of x
. If x < 0
, returns NaN
.
Description
Because log10()
is a static method of Math
, you always use it as Math.log10()
, rather than as a method of a Math
object you created (Math
is not a constructor).
This function is the equivalent of Math.log(x) / Math.log(10)
. For log10(e)
, use the constant Math.LOG10E
, which is 1 / Math.LN10
.
Examples
Using Math.log10()
js
Math.log10(-2); // NaN
Math.log10(-0); // -Infinity
Math.log10(0); // -Infinity
Math.log10(1); // 0
Math.log10(2); // 0.3010299956639812
Math.log10(100000); // 5
Math.log10(Infinity); // Infinity
Specifications
Specification |
---|
ECMAScript Language Specification # sec-math.log10 |
Browser compatibility
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