10.3 删除节点
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<script>
function deleteNode() {
var div = document.getElementById("testDiv");
var list = div.childNodes;
div.removeChild(list[0]);
}
</script>
</head>
<body>
<p>JavaScript</p>
<div id="testDiv">
<p>1</p>
<p>2</p>
<p>3</p>
</div>
<button onclick="deleteNode()">click</button>
</body>
</html>