Tryit Editor v2.9

Edit This Code:
<!DOCTYPE html>
<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.2/jquery.min.js"></script>
<script>
$(document).ready(function(){
    $("button").click(function(){
        alert($("input:text").val());
    });
});
</script>
</head>
<body>

Firstname: <input type="text" name="fname" value="Peter"><br>
Lastname: <input type="text" name="lname" value="Griffin"><br><br>

<button>Return the value of the first input field</button>

</body>
</html>