How Do I Convert a Float Number to a Whole Number in Javascript?

How do I convert a float number to a whole number in JavaScript?

When working with JavaScript, you may often come across situations where you need to convert a floating-point number to a whole number. There are several ways to achieve this conversion, and in this article, we will explore a few of them.

Method 1: Using the Math.floor() function

The Math.floor() function in JavaScript is used to round a number down to the nearest whole number. By passing the float number as an argument to this function, we can convert it to a whole number.

const floatNumber = 3.14;
const wholeNumber = Math.floor(floatNumber);

console.log(wholeNumber); // Output: 3

Method 2: Using the Math.ceil() function

The Math.ceil() function is the opposite of Math.floor(). It rounds a number up to the nearest whole number. By passing the float number as an argument to this function, we can convert it to a whole number.

const floatNumber = 3.14;
const wholeNumber = Math.ceil(floatNumber);

console.log(wholeNumber); // Output: 4

Method 3: Using the Math.round() function

The Math.round() function rounds a number to the nearest whole number. If the decimal part is less than 0.5, it rounds down; otherwise, it rounds up. By passing the float number as an argument to this function, we can convert it to a whole number.

const floatNumber = 3.14;
const wholeNumber = Math.round(floatNumber);

console.log(wholeNumber); // Output: 3

Method 4: Using the parseInt() function

The parseInt() function in JavaScript is used to parse a string and return an integer. By passing the float number as a string to this function, we can convert it to a whole number.

const floatNumber = 3.14;
const wholeNumber = parseInt(floatNumber);

console.log(wholeNumber); // Output: 3

These are some of the methods you can use to convert a float number to a whole number in JavaScript. Choose the method that best suits your requirements and implement it in your code.

Happy coding!