<html>
<body>
<p>Click the button to get the tag names of the body element's children.</p>
<button onclick="myFunction()">Try it</button>
<p id="demo"></p>
<script>
function myFunction() {
var c = document.body.children;
var txt = "";
var i;
for (i = 0; i < c.length; i++) {
txt = txt + c[i].tagName + "<br>";
}
document.getElementById("demo").innerHTML = txt;
}
</script>
</body>
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</html>