Javascript Numbers

JavaScript is a versatile programming language that can perform arithmetic calculations and manipulate numbers in various ways. Let’s dive into it!

Part 1: JavaScript Numbers Basics

JavaScript has only one type of number, which is represented by the Number data type. It can represent both integers and floating-point numbers. Unlike other programming languages, JavaScript doesn’t have separate data types for integers and floating-point numbers.

Part 2: Declaring and Initializing Numbers

To declare and initialize a number in JavaScript, you can simply use the Number keyword, followed by the number you want to declare. For example, let’s declare a variable called “myNumber” and initialize it to the value of 10:

let myNumber = 10;

Part 3: Basic Arithmetic Operations

JavaScript can perform all the basic arithmetic operations, such as addition, subtraction, multiplication, and division. Let’s take a look at some examples:

let a = 5; let b = 10; let sum = a + b; // 15 let difference = b – a; // 5 let product = a * b; // 50 let quotient = b / a; // 2

In addition to these basic operations, JavaScript also has some built-in functions for more complex operations, such as finding the square root of a number, rounding a number to a certain decimal place, and more.

Part 4: Number Conversions

JavaScript also provides some built-in functions to convert numbers from one type to another. The most commonly used functions are parseInt() and parseFloat(). Let’s take a look at an example:

let strNumber = “10”; let intNumber = parseInt(strNumber); console.log(intNumber); // 10

Here, we’re converting a string to an integer using the parseInt() function.

Part 5: NaN and Infinity

JavaScript also has two special values for numbers: NaN and Infinity. NaN stands for “Not a Number” and is the result of an undefined or unrepresentable mathematical operation. Infinity, on the other hand, represents a value that is greater than any other number. Let’s take a look at an example:

let result1 = 10 / 0; // Infinity let result2 = “hello” / 5; // NaN


That’s it for today’s video on JavaScript numbers. We hope you found this article helpful. If you have any questions or comments, please leave them in the comments section below.

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