**`Math`** is a built-in object in JavaScript that contains different methods and properties used to perform mathematical operations. It contains the **`log10()` function**, which is used to compute the *base 10 logarithm* of a specified number.

- `param`: This is the input value of type `Number` for which we want to find the `log10()`.

> **`Number`** in JavaScript is a *64-bit double-precision* value that is the same as `double` in C# or Java.

- `Number`: It returns the base 10 logarithm of the input parameter `param`. It is of type `Number`.

- `-Infinity`: The function returns this if the input parameter `param` = 0.

- `+Infinity`: The function returns this if the input parameter `param` = `+Infinity`.

- `NaN`: The function returns this if the input parameter `param` < 0 or `param` = `-Infinity`.

console.log("log10(-1) = " + Math.log10(-1));

console.log("log10(0) = " + Math.log10(0));

console.log("log10(1) = " + Math.log10(1));

console.log("log10(20) = " + Math.log10(20));

console.log("log10(∞) = " + Math.log10(Infinity));

console.log("log10(-∞) = " + Math.log10(-Infinity));

What is Math.log10() in JavaScript?

Calculates the base 10 logarithm of a number in JavaScript, returning -Infinity for 0, +Infinity for +Infinity, and NaN for negative values or -Infinity.

What is Math.log10() in JavaScript?

Syntax

Parameter

Return value

Example