If Else statements in JavaScript Example

In this post we will discuss how to use if else statement in javascript. Also you can check my previous posts  on:

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Syntax of if else statement:

if (condition) {
    statements1;
}
else if (condition)  {
    statements2;
}
else if (condition)  {
    statements3;
}
else{
    statements4;
}

Example:

Below is an example of if else statement:

<script language="JavaScript" type="text/javascript">

        var age = eval(prompt("How much you scored?", ""));

        if (age >= 60) {
            alert("First Division");
        }
        else if (age > 50 && age < 60) {
            alert("Second Division");
        }
        else if (age >= 30 && age < 50) {
            alert("Third Division");
        }
        else {
            alert("Fail");
        }

    </script>

Here in this example it will first prompt use to enter a value and according to the condition it will alert the message. See fig below:

Once you enter the value it will show alert box according to the condition like below: