Home Web Front-end JS Tutorial Understanding JavaScript Operators: A Complete Guide with Examples

Understanding JavaScript Operators: A Complete Guide with Examples

Dec 18, 2024 am 12:15 AM

Understanding JavaScript Operators: A Complete Guide with Examples

### Operators in JavaScript

Operators in JavaScript are special symbols used to perform operations on values and variables. These operations can involve arithmetic, assignment, comparison, logical, and other actions. Understanding operators is essential for performing basic calculations, comparisons, and controlling the flow of your code.

JavaScript supports a wide variety of operators, and they are categorized into the following types:


### 1. **Arithmetic Operators**
Arithmetic operators are used to perform mathematical calculations on numbers.

Operator Description Example
Addition 5 3 → 8
- Subtraction 5 - 3 → 2
* Multiplication 5 * 3 → 15
/ Division 5 / 3 → 1.666...
% Modulus (Remainder) 5 % 3 → 2
** Exponentiation 5 ** 2 → 25

Example:


**

2. Assignment Operators**

Assignment operators are used to assign values to variables.

Operator Description Example
= Assign value x = 5
= Add and assign x = 3 → x = x 3
-= Subtract and assign x -= 2 → x = x - 2
*= Multiply and assign x *= 4 → x = x * 4
/= Divide and assign x /= 2 → x = x / 2
%= Modulus and assign x %= 3 → x = x % 3
**= Exponentiation and assign x **= 2 → x = x ** 2

Example:


### 3. **Comparison Operators**
Comparison operators are used to compare values and return a Boolean (true or false) based on the condition.

Operator Description Example
== Equal to (loose) 5 == '5' → true
=== Equal to (strict) 5 === '5' → false
!= Not equal to (loose) 5 != '5' → false
!== Not equal to (strict) 5 !== '5' → true
> Greater than 5 > 3 → true
< Less than 5 < 3 → false
>= Greater than or equal 5 >= 5 → true
<= Less than or equal 5 <= 3 → false

Example:

<🎝🎝🎝>

### 4. **Logical Operators**
Logical operators are used to perform logical operations, returning Boolean values.

Operator Description Example
&& Logical AND true && false → false
` `
! Logical NOT !true → false

#### Example:

<🎝🎝🎝>

### 5. **Unary Operators**
Unary operators operate on a single operand to perform a specific action.

Operator Description Example
Increment x → x = x 1
-- Decrement x-- → x = x - 1
typeof Type of operand typeof x → number
void Evaluates expression without returning a value void(0)

#### Example:

<🎝🎝🎝>

### 6. **Ternary (Conditional) Operator
**The ternary operator is a shorthand for the if...else statement. It evaluates a condition and returns one of two values based on whether the condition is true or false.

Operator Description Example
condition ? expr1 : expr2 If condition is true, return expr1; otherwise, return expr2 x > 10 ? 'Greater' : 'Lesser'

*#### Example:
*


### 7. **Bitwise Operators
**Bitwise operators perform operations on binary numbers.

Operator Description Example
& AND 5 & 3 → 1
` ` OR
^ XOR 5 ^ 3 → 6
~ NOT ~5 → -6
<< Left shift 5 << 1 → 10
>> Right shift 5 >> 1 → 2
>>> Unsigned right shift 5 >>> 1 → 2

*#### Example:
*


### 8. **Spread Operator (...)
**The spread operator allows you to unpack elements from an array or object into a new array or object.

*#### Example:
*


### Conclusion

JavaScript operators are fundamental for performing calculations, comparisons, and logical operations. Whether you're manipulating values, comparing them, or controlling the flow of your program, understanding these operators is crucial for efficient coding. Use the right operators based on your task to ensure clean and readable code.

Hi, I'm Abhay Singh Kathayat!
I am a full-stack developer with expertise in both front-end and back-end technologies. I work with a variety of programming languages and frameworks to build efficient, scalable, and user-friendly applications.
Feel free to reach out to me at my business email: kaashshorts28@gmail.com.

The above is the detailed content of Understanding JavaScript Operators: A Complete Guide with Examples. For more information, please follow other related articles on the PHP Chinese website!

Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

What should I do if I encounter garbled code printing for front-end thermal paper receipts? What should I do if I encounter garbled code printing for front-end thermal paper receipts? Apr 04, 2025 pm 02:42 PM

Frequently Asked Questions and Solutions for Front-end Thermal Paper Ticket Printing In Front-end Development, Ticket Printing is a common requirement. However, many developers are implementing...

Demystifying JavaScript: What It Does and Why It Matters Demystifying JavaScript: What It Does and Why It Matters Apr 09, 2025 am 12:07 AM

JavaScript is the cornerstone of modern web development, and its main functions include event-driven programming, dynamic content generation and asynchronous programming. 1) Event-driven programming allows web pages to change dynamically according to user operations. 2) Dynamic content generation allows page content to be adjusted according to conditions. 3) Asynchronous programming ensures that the user interface is not blocked. JavaScript is widely used in web interaction, single-page application and server-side development, greatly improving the flexibility of user experience and cross-platform development.

Who gets paid more Python or JavaScript? Who gets paid more Python or JavaScript? Apr 04, 2025 am 12:09 AM

There is no absolute salary for Python and JavaScript developers, depending on skills and industry needs. 1. Python may be paid more in data science and machine learning. 2. JavaScript has great demand in front-end and full-stack development, and its salary is also considerable. 3. Influencing factors include experience, geographical location, company size and specific skills.

How to merge array elements with the same ID into one object using JavaScript? How to merge array elements with the same ID into one object using JavaScript? Apr 04, 2025 pm 05:09 PM

How to merge array elements with the same ID into one object in JavaScript? When processing data, we often encounter the need to have the same ID...

Is JavaScript hard to learn? Is JavaScript hard to learn? Apr 03, 2025 am 12:20 AM

Learning JavaScript is not difficult, but it is challenging. 1) Understand basic concepts such as variables, data types, functions, etc. 2) Master asynchronous programming and implement it through event loops. 3) Use DOM operations and Promise to handle asynchronous requests. 4) Avoid common mistakes and use debugging techniques. 5) Optimize performance and follow best practices.

How to achieve parallax scrolling and element animation effects, like Shiseido's official website?
or:
How can we achieve the animation effect accompanied by page scrolling like Shiseido's official website? How to achieve parallax scrolling and element animation effects, like Shiseido's official website? or: How can we achieve the animation effect accompanied by page scrolling like Shiseido's official website? Apr 04, 2025 pm 05:36 PM

Discussion on the realization of parallax scrolling and element animation effects in this article will explore how to achieve similar to Shiseido official website (https://www.shiseido.co.jp/sb/wonderland/)...

The Evolution of JavaScript: Current Trends and Future Prospects The Evolution of JavaScript: Current Trends and Future Prospects Apr 10, 2025 am 09:33 AM

The latest trends in JavaScript include the rise of TypeScript, the popularity of modern frameworks and libraries, and the application of WebAssembly. Future prospects cover more powerful type systems, the development of server-side JavaScript, the expansion of artificial intelligence and machine learning, and the potential of IoT and edge computing.

The difference in console.log output result: Why are the two calls different? The difference in console.log output result: Why are the two calls different? Apr 04, 2025 pm 05:12 PM

In-depth discussion of the root causes of the difference in console.log output. This article will analyze the differences in the output results of console.log function in a piece of code and explain the reasons behind it. �...

See all articles