<html>
<body><p id="demo">Click the button get the node types of the body element's child nodes</p>
<button onclick="myFunction()">Try it</button>
<script>
function myFunction()
{
var txt="";
var c=document.body.childNodes;
for (i=0; i<c.length; i++)
{
txt=txt + c[i].nodeType + "<br>";
};
var x=document.getElementById("demo");
x.innerHTML=txt;
}
</script>
<p><strong>Note:</strong> Whitespace inside elements is considered as text, and text
is considered as text nodes.</p>
</body>
</html>