Tryit Editor v2.7

Edit This Code:
<!DOCTYPE html>
<html>
<head>
<script>
function myFunction() {
    if (window.top != window.self)  {
        document.getElementById("demo").innerHTML = "This window is not the topmost window! Am I in a frame?";
    } else { 
        document.getElementById("demo").innerHTML = "This window is the topmost window!";
    } 
}
</script>

<script>
var _hmt = _hmt || [];
(function() {
var hm = document.createElement("script");
hm.src = "//hm.baidu.com/hm.js?73c27e26f610eb3c9f3feb0c75b03925";
var s = document.getElementsByTagName("script")[0];
s.parentNode.insertBefore(hm, s);
})();
</script>
</head>
<body>

<button onclick="myFunction()">Check window</button>

<p id="demo"></p>

</body>
</html>