First Program

Javascript simple example to verify age of any person, if age is greater than 18 show message adult otherwise show under 18

JavaScript Example to verify age

Example

<html>
<head>
<script>
function verify(){
var no;
no=Number(document.getElementById("age").value);
if(no<18)
{
alert("Under 18");
}
else
{
alert("You are Adult");
}
}
</script>
</head>
<body>
Enter your age:<input id="age"><br />
<button onclick="verify()">Click me</button>
</body>
</html>

Result

Enter your age: