How to implement else statement in JavaScript?

In this article we will discuss implementing else statement. We can use else statement to specify a block of code to executed when the condition is false.

Syntax:

if (condition) {
       // block of code to be executed if the condition is true
    } else { 
        //block of code to be executed if the condition is false
    }

Output:

<script type="text/javascript">

    var input = Number(prompt("Please enter a number", ""));

    if (input == 1 || input == 2 || input == 3) {
        alert("You have entered number between 1 and 3");
    }
    else {
        alert("Your have not enter not between 1 and 3");
    }
   

  </script>

 Output: