<html>
<body>
<p>单击该按钮可获取主体元素的子节点的节点名称。</p>
<button onclick="myFunction()">试一试</button>
<p><strong>注意:</strong> 元素内的空格被视为#text,文本被视为节点。</p>
<!-- My personal comment goes here.. -->
<div><strong>注意:</strong>文档中的注释被视为#comments,注释也被视为节点。</div>
<p id="demo"></p>
<script>
function myFunction() {
var c = document.body.childNodes;
var txt = "";
var i;
for (i = 0; i < c.length; i++) {
txt = txt + c[i].nodeName + "<br>";
}
document.getElementById("demo").innerHTML = txt;
}
</script>
</body>
</html>