Live Code Editor Version 2.0

The typeof Operator RUN

<!DOCTYPE html>
<html>
    <head>
        <meta charset="utf-8">
    </head>
    <body>
        <h1>Học lập trình miễn phí tại freetuts.net</h1>
        <p id="result"></p>
  
        <button onclick="myFunction()">Run</button>
        
        <script>
            function myFunction() {
                var content = '"Bee" - ' + typeof "Bee" + "<br>";
                    content = content + 'False - ' + typeof false + "<br>";
                    content = content + '10.9 - ' + typeof 10.9 + "<br>";
                    content = content + 'NaN - ' + typeof NaN + "<br>";
                    content = content + '[1, 2, 3, 4] - ' + typeof [1, 2, 3, 4] + "<br>";
                    content = content + '{name:"Bee", age:21} - ' + typeof {name:'Bee', age:21} + "<br>";
                    content = content + 'Date() - ' + typeof Date() + "<br>";
                    content = content + 'function () {} - ' + typeof function () {} + "<br>";
                    content = content + 'Freetuts - ' + typeof Freetuts + "<br>";
                    content = content + 'null - ' + typeof null + "<br>";
                document.getElementById("result").innerHTML = content;
            }
        </script>
    </body>
</html>