Browser Object Model in javascript

Timing code-

<input type="button" value="Click" onclick="setTimeout(hello, 5000)">

<script>

    function hello(){

       // alert("yes you can go anywhere!!");

       window.location='https://www.google.com/';

    }

</script>    

 Confirm popup code-

<input type="button" value="Click to Know" onclick="hello()">

<p id="show"></p>

<script>

    function hello(){

        var result;

            if(confirm("Yes tell me what you want to do?"))

                {

                        result = "You press OK!!!";

                }

            else{

                        result = "You press Cancel!!!!!!!!";

                }

    document.getElementById("show").innerHTML=result;

}

</script>