Javascript document.write output example

            <!DOCTYPE html>
<html>
<body>

    <h1>Javascript Output</h1>
    <p>Displaying the output using document.write() </p>

    <button type="button" onclick="functionName()">Click Me!</button>

    <script>
        function functionName(){
            document.write(10 + 10)
        }
    </script>

</body>
</html>
        

            
        