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 for loop

JavaScript For loop



1] for loop :-

  javascript for loop iterates  element for fixed number of time.

Syntax :-

for (initialization; condition; increment)

{

code executed 

}

 initialization  :- is the count variable.

codition :- condition is called  answer is true body than for loop executed.

 condition :- condition is called answer is  false than process stop


1] Example of for loop 

Q. Iterate 1 to 25 print each number.


for (let i = 1; i < 25; i++) {
    console.log(i);
  }
 

 for loop output :-




2] Example of for loop  

Q. Iterate through array and print element.



 fruits=['kiwi','pineapple','watermelon'];
 for(let i=0; i<fruits.length; i++){
    console.log(fruits[i]);
 }

Output 


3] Example of for loop  

Q. Iterate backward form 5 to 0 print.


for (let i = 5; i >= 0; i--) {
    console.log(i);
  }

Output



4] Example of for loop

   Q. for loop run 15 time 


for(let i=0;i<15;i++)
{
  console.log("iteration",i+1);
}


Explain:-

let i=0; initializes loop
counter i to 0
 i<15 condition for loop
 i is less than 15
 i++ increments value i by 1

 prints message display to the
 console.log(iteration , i+1)


Output :-

Related Tutorial :-

javascript variable with example

php program to print alphabet pattern L

css border property

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