Conditional Rendering in React Complete Guide with Examples 2026

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  Conditional Rendering in React Conditional Rendering is one of the most useful concepts in React. It means showing different content on the screen depending on a condition. For example: If a user is logged in → show Logout If a user is not logged in → show Login If a student has passed → show Congratulations If a product is available → show Buy Now If data is loading → show Loading... React does not have a separate if rendering tag. Instead, we use normal JavaScript conditions such as if, the ternary operator, &&, and switch to decide what should appear in the UI.
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JavaScript Arithmetic Operators

 

JavaScript Arithmetic Operators



JavaScript  Arithmetic Operators 

    1] Addition (+)

    2]  Subtraction (-)

    3] Multiplication  (*)

    4] Exponentiation (**)

    5] Division  (/)

    6]  Modulus   (%)

    7]   Increment  (++)

     8]  Decrement (--)

  

         Example :-

  

Operators

 Name

Example

Result

 
      +

 
Addition

 
 6+2

 
8

      
      -

 
Subtraction

 
6 - 2

 
4

 
      *

 
Multiplication

 
6 * 2

 
12

   
     ** 

 
Exponentiation

 
2 **3

 
8

 
      /

 
Division

 
6 / 2

 
3

    
     %

 
Modulus

 
7 % 3

 
1

  
    ++    

 
Increment

 
 6 ++

 
7

 
     _ _
 

 
Decrement

 
6 - -

 
5


    1] Addition (+)     

Example (Source Code)  :-

let a= 1000
    b=  2000;
  document.write( "Addition of two number =",a+b);

  Output :-

Addition two number

    2]  Subtraction (-)

Example (source Code)   :-

let a= 4000
    b=  2000;
  document.write( "Subtraction of two number =",a-b);

  Output :-

subtraction of two number


    3] Multiplication  (*)

Example :-

let a= 4000
    b=  2000;
  document.write( "Multiplication of two number =",a*b);


  Output :-

multiplication of two number
4] Exponentiation (**)

Example :-

let a= 4
    b=  2;
  document.write( "Exponentiation of two number =",a**b);

  Output :-

Exponentiation of two number


           


  5] Division  (/)


Example :-

let a= 4
    b=  2;
  document.write( "Division of two number =",a/b);


  Output :-

Division of two number


    6]  Modulus   (%)
Example :-

let a= 4
    b=  2;
  document.write( "Modulus of two number =",a%b);

  Output :-



    7]   Increment  (++)
Example :-

let a= 4
   
  document.write( "Increment of two number =",++a);

  Output :-

     8]  Decrement (--)

Example :-

let a= 4
   
  document.write( "Decrement of two number =",--a);

  Output :-

Decrement (--)


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