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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>
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