html运行实例（eg_js_dom_nodelist_length）-搜寻教程库

代码示例：（标识：eg_js_dom_nodelist_length）

<!DOCTYPE html>
<html>
<body>

<h1>JavaScript HTML DOM</h1>

<p>Hellow World!</p>

<p>Hello China!</p>

<p id="demo"></p>

<script>
var myNodelist = document.querySelectorAll("p");
document.getElementById("demo").innerHTML =
"此文档包含 " + myNodelist.length + " 段文字。";
</script>

</body>
</html>