IF Conditions in JavaScript

#javascript #programming #web #beginners

What is an "if" Condition?
The if statement checks whether a condition is true or false.
Example: if it's true, it will run some code.
if it's false, it will skip that code.

Syntax:

    if(condition){
            //code to run if condition is true
              }

Example 1: Simple if

          let age=20;
          if(age >= 18){
            console.log("you can vote!");
            }
   output:
          you can vote!

Example 2: if..Else

          let age=15;
          if(age >=18){
             console.log("you can vote!");
           }
          else{
             console.log("you are not eligible");
           }

      Output: you are not eligible

**Example 3: if...Else if...Else

          let marks=75;
          if(marks >=90) {
            console.log("Grade A");
          } else if (marks >=70) {
            console.log("Grade B");
          } else {
            console.log("Grade C");
          }

      Output: Grade B

Example 4: Switch ..Case

         let grade=2;
         switch (grade) {
           case 1:
             console.log("Excellent");
             break;
           case 2:
             console.log("Good");
             break;
           case 3:
             console.log("Average");
             break;
           default:
             console.log("Invalid grade");
          }