# Javascript Operators : The Basics you need to know! Let's get started .... While writing the javascript code , we sometimes need to perform the actions like **addition and multiplication** of numbers , **comparing** the values and making some **decisions** . This all can be done using small symbols called as **operators.** Even though these operators looks simple (= , - , === , % ) , they are known as the building blocks of javascript program . In this blog , we’ll explore the different types of operators and learn how they help our code think, calculate, and make decisions. ![](https://cdn.hashnode.com/uploads/covers/697720f9aaff412f46e7c283/83a448f0-cb69-43a9-b71f-c7f4e38acce6.png align="center") ## **1\] Arithmetic:** `The Engine Room: Powering Your Data` These are the basics you learned in school, but with a programming twist. They take two values and spit out a new one. The types of Artithmetic operators are : **Addition , Multiplication , Division , subtraction and Modulus.** ![](https://cdn.hashnode.com/uploads/covers/697720f9aaff412f46e7c283/80b0c8a6-f6a8-404e-8521-8910e6d77e6e.png align="center") The modulus operator gives you the remainder . in above eg. you can see 3%9 = 3; means 3 is the remainder . Another example you can take is 20%2 = 0; means 0 is the remainder . **Pro Tip:** Use the Modulo operator (`%`) to check if a number is even or odd. If `num % 2` is `0`, it’s even! ## 2\] **Comparison operators** Comparison operators are used to **compare two values or variables**. They check whether a condition is **true or false** and always return a **Boolean value (**`true` **or** `false`**)**. The comparison operators are : **greater than , lesser than , not equal to , strict equal to , loose equal to.** ![](https://cdn.hashnode.com/uploads/covers/697720f9aaff412f46e7c283/b9456949-554f-4ab8-8d4e-302f57669af9.png align="center") ## **"The Twin Paradox: Why** `==` **and** `===` **Aren't Friends"** * ### The Loose Twin (`==`) The Double Equals is the "chill" friend. It doesn't care about types. If you try to compare a **String** "5" and a **Number** 5, it says, *"I'll just convert one of these so they match. Close enough!"* This hidden conversion is called **Type Coercion** ```javascript console.log(5 == "5"); // true (JavaScript forces them to match) console.log(true == 1); // true (JavaScript treats 1 as true) ``` * ### The Strict Twin (`===`) The Triple Equals is the "perfectionist" friend. It checks both the **Value** and the **Data Type**. If they aren't identical twins, it returns `false`. No conversions, no excuses. ```javascript console.log(5 === "5"); // false (One is a Number, one is a String) console.log(true === 1); // false (One is a Boolean, one is a Number) ``` ## 3\] **Logical:** `The Brain Center: Building Complex Conditions` These allow your code to **make decisions**. Think of them as the "Logic Gates" of your application. The logical operators are : **and , not , or** **AND operator:** ![AND operator {&&}](https://cdn.hashnode.com/uploads/covers/697720f9aaff412f46e7c283/6a02fde5-32e6-4386-94a3-e64d96a26c60.png align="center") **OR operator :** ![](https://cdn.hashnode.com/uploads/covers/697720f9aaff412f46e7c283/ddfedac8-9493-4709-b32c-cb7af54c84ac.png align="center") **NOT operator :** ![](https://cdn.hashnode.com/uploads/covers/697720f9aaff412f46e7c283/ccab9b0f-17d5-4a83-9afa-eb5c56125013.png align="center") ## 4\] **Assignment:** `Code Shortcuts: Levelling Up Your Efficiency` You already know `=`, but did you know you can do math and assign a value at the same time? well yes you can ! all thanks to assignment operators .It saves space and looks cleaner. ```javascript var points = 10; points += 5; // treated as: points = points + 5 (Result: 15) points -= 3; // treated as: points = points - 3 (Result: 12) ``` ## SHORT SUMMARY FOR THE TOPICS YOU READ UNTILL NOW !

Category

Operator

Name

Rule / Logic

Real-World Example

Arithmetic

+, -, *, /

Basic Math

Standard calculation.

total = price + tax

%

Modulo

Finds the remainder.

isEven = (num % 2 === 0)

Comparison

==

Loose

Checks value only.

5 == "5" (True )

===

Strict

Checks value + type.

5 === "5" (False )

Logical

&&

AND

All must be true.

age && hassubscription

||

OR

At least one is true.

isWeekend || isHoliday

!

NOT

Flips the truth.

!islocked (Unlocked)

Assignment

+=, -=

Shortcut

Math + Save result.

score += 10 (Add 10)

***THANK YOU !***