Javascript method to delete child nodes: first obtain the parent node object and child node object; then use the removeChild() method to delete the child node, the syntax is "parent node object.removeChild (child node object)". The removeChild() method can delete a child node on the parent node.
The operating environment of this tutorial: windows7 system, javascript version 1.8.5, Dell G3 computer.
javascript deletes child nodes
The removeChild() method can delete a child node on the parent node.
Syntax:
parentNode.removeChild(nodeName)
nodeName: The name of the current node
parentNode: The parent node of the current node
Example:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<style>
div{
border: 2px dashed #006DAF;
padding: 10px;
}
p{
background-color: palegoldenrod;
}
</style>
</head>
<body>
<div>div元素--父元素
<p>p元素--子元素</p>
<p>p元素--子元素</p>
</div> <br />
<input id="btn" type="button" value="删除子节点">
</body>
<script>
function deleteChild() {
var div = document.querySelector("div");
var p = document.querySelector("p");
div.removeChild(p);
}
var btn = document.getElementById("btn").onclick = function() {
deleteChild();
}
</script>
</html>Rendering:
javascript advanced tutorial]
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