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How to remove the last node in jquery
- 青灯夜游Original
- 2022-04-22 17:55:282632browse
Method to remove the last node: 1. Use the "eq(-1)" selector to select the last node in the document, the syntax is "$(Element:eq(-1))"; 2 . Use remove() to delete the selected node. The syntax "selected element.remove()" can delete the specified element and all text and sub-nodes inside it.
The operating environment of this tutorial: windows7 system, jquery1.10.2 version, Dell G3 computer.
jquery removes the last node
Implementation method:
Use the ":eq()" selector to select the last node element in the document
-
Use remove() to delete the selected node element
remove() method Deletes an element and all content within it.
Key points: :eq() selector
: The :eq() selector selects elements with the specified index value.
index values start at 0, so the index value of the first element is 0 (not 1).
When the index is a negative value, select the element from back to front
Implementation code:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<script src="js/jquery-1.10.2.min.js"></script>
<style>
.div,
div * {
display: block;
border: 2px solid lightgrey;
color: lightgrey;
padding: 5px;
margin: 15px;
}
</style>
<script>
$(document).ready(function() {
$("button").on("click", function() {
$("li:eq(-1)").remove();
});
});
</script>
</head>
<body class="ancestors">
<div style="width:500px;">div (父节点)
<ul>ul (指定元素)
<li>li (子节点1)
<span>span (孙节点1)</span>
</li>
<li>li (子节点2)
<span>span (孙节点2)</span>
</li>
<li>li (子节点3)
<span>span (孙节点3)</span>
</li>
</ul>
</div>
<button>删除最后一个li元素</button>
</body>
</html>
[Recommended learning: jQuery video tutorial, web front-end video]
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