Write a JavaScript program to append child at runtime.
<html>
<head>
<title>Append Child at Runtime</title>
<script type="text/javascript">
function addChild() {
ev = document.createElement("input")
ev.type = "file"
d = document.getElementById("mydiv")
d.appendChild(ev)
br = document.createElement("br")
d.appendChild(br)
}
</script>
</head>
<body>
<input type="button" value="Add" onclick="addChild()" />
<div id="mydiv">
</div>
</body>
</html>
