Simple javascript yes/no prompt and html forward

I needed a simple confirmation YES/NO on my web page which would then redirect to a different page depending on the answer. I couldn't use any other languages but javascript so this is how I acquired it.

First I created a simple button

<button type="button" class="button" onclick="myFunction()">Press me please</button>

and the javascript

<script>

function myFunction()

{

var answer = confirm ("Yes")

if (answer)

window.location.assign("page1.html")

else

window.location.assign("page2.html")

}

</script>