How to import Math in JavaScript

You don’t need to import the Math object in JavaScript, because it’s a built-in object that’s always available. You can access its properties and methods directly in your code.

Note: the Math object contains many other useful properties and methods for performing mathematical operations, such as trigonometric functions, exponential functions, rounding functions, and more.

How to import Math in JavaScript

Simple example code.

<!DOCTYPE html>
<html>
<body>
<script>
    // Calculate the square root of a number
    const x = 16;
    const y = Math.sqrt(x);
    console.log(y); 

    // Generate a random number between 0 and 1
    const z = Math.random();
    console.log(z); 

</script>
</body>
</html>

Output:

Do you need to import Math in JavaScript?

Answer: No, you don’t need to do it because the Math object in JavaScript is part of the global object, which means you can use its properties and methods directly in your code without importing it.

Let’s see an example that demonstrates how to use the Math object to round numbers to a specified number of decimal places:

// Round a number to two decimal places
const x = 3.14159;
const y = Math.round(x * 100) / 100;
console.log(y); // Output: 3.14

// Round a number to three decimal places
const z = 2.71828;
const w = Math.round(z * 1000) / 1000;
console.log(w); // Output: 2.718

Comment if you have any doubts or suggestions on this Js math topic.

Note: The All JS Examples codes are tested on the Firefox browser and the Chrome browser.
OS: Windows 10
Code: HTML 5 Version

How to import Math in JavaScript