Baseline Widely available
The Math.log10()
static method returns the base 10 logarithm of a number. That is
console.log(Math.log10(100000));
// Expected output: 5
console.log(Math.log10(2));
// Expected output: 0.3010299956639812
console.log(Math.log10(1));
// Expected output: 0
console.log(Math.log10(0));
// Expected output: -Infinity
Syntax Parameters
x
A number greater than or equal to 0.
The base 10 logarithm of x
. If x < 0
, returns NaN
.
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
.
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 Browser compatibility See also
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