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<!DOCTYPE html>
<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>";
}
console.assert(txt === '#text<br>P<br>#text<br>BUTTON<br>#text<br>P<br>#text<br>SCRIPT<br>#text<br>#text<br>', txt);
}
console.error('document.body.children');
myFunction();
console.exit();
</script>
</body>
</html>
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