In JavaScript, conditional operators are used to make decisions based on certain conditions. The primary conditional operator in JavaScript is the if statement, which allows you to execute a block of code if a specified condition is true. Additionally, JavaScript also provides other conditional operators like else, else if, switch, and the ternary operator (? :). Here's a brief overview of each:

1. *if *:
   if is a primary conditional operator in js.
   syntax
   
   if (condition) {
   // Code to be executed if the condition is true
   }

2. else...if : when two fact which can be execute in a function than comes the else if as a solution

syntax
if (condition) {
// Code to be executed if the condition is true
} else {
// Code to be executed if the condition is false
}

1. if...else if...else Statement: when there are more than two condition can be execute in a function then we used if...else if...else Statement it used for complex conditional rendering.
   syntax
   if (condition1) {
   // Code to be executed if condition1 is true
   } else if (condition2) {
   // Code to be executed if condition2 is true
   } else {
   // Code to be executed if none of the conditions are true
   }

2. Switch Statement: switch statement is used in big or complicated conditional statement.
   syntax
   switch (expression) {
   case value1:
   // Code to be executed if expression === value1
   break;
   case value2:
   // Code to be executed if expression === value2
   break;
   default:
   // Code to be executed if expression doesn't match any case
   }

5.Ternary Operator (Conditional Operator):
Now a day it's most popular and easy Conditional operator that can solve a large statement with a single line of code .

syntax :
(condition) ? expression1 : expression2;
// If the condition is true, expression1 is evaluated; otherwise, expression2 is evaluated.