if-statements.html

<!doctype html>
<html>
<head>
    <title>JavaScript If Statements</title>
</head>
<body>

    <h1>JavaScript If Statements</h1>

    <p>Enter some text:</p>

    <input type="text" id="text">

    <br>

    <button id="check">Check</button>

    <script>

    var button = document.getElementById("check");

    button.addEventListener("click", function(){

        var textbox = document.getElementById("text");

        if(textbox.value == "")
        {
            alert("The textbox is empty!");
        }
        else
        {
            alert("The textbox has a value");
        }

    });

    </script>

</body>
</html>