The difference between jQuery DOM operation empty and remove

When you want to remove specified elements, jQuery provides two methods, empty() and remove([expr]). Both of them delete elements, but there are still differences between them.

empty Method

Strictly speaking, the empty() method does not delete the node, but clears the node. It can clear all descendant nodes in the element

Strictly speaking, empty cannot delete its own node

remove method

This node and all descendant nodes contained in this node will be deleted at the same time

Provides a filtering expression to be passed to delete elements in the specified collection

Below we will use code to analyze in detail

<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8">
    <title>remove()与empty()的区别</title>
    <script src="http://lib.sinaapp.com/js/jquery/1.9.1/jquery-1.9.1.min.js"></script>
    <style type="text/css">
        #dv1{
            width:250px;
            height:250px;
            background:red;
            float:left;
        }

        #dv2{
            width:250px;
            height:250px;
            background:green;
            float: left;
            margin-left:5px;
            margin-right:5px;
        }
    </style>
</head>
<body>
    <div id="dv1">
        <p>元素1</p>
        <p>元素2</p>
    </div>

    <div id="dv2">
        <p>元素3</p>
        <p>元素4</p>
    </div>
    <input type="button" value="empty" id="but1">
    <input type="button" value="remove" id="but2">

    <script>
        $("#but1").click(function(){
            $("#dv1").empty();
        })

        $("#but2").click(function(){
            $("#dv2").remove();
        })
    </script>
</body>
</html>

The above code, after we run it, we can see that when I click empty, element 1 and element 2 will be cleared, but the div still exists ’

When I click remove, not only the elements inside will be deleted, but also the div itself will be deleted

Continuing Learning

new file

<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>remove()与empty()的区别</title> <script src="http://lib.sinaapp.com/js/jquery/1.9.1/jquery-1.9.1.min.js"></script> <style type="text/css"> #dv1{ width:250px; height:250px; background:red; float:left; } #dv2{ width:250px; height:250px; background:green; float: left; margin-left:5px; margin-right:5px; } </style> </head> <body> <div id="dv1"> <p>元素1</p> <p>元素2</p> </div> <div id="dv2"> <p>元素3</p> <p>元素4</p> </div> <input type="button" value="empty" id="but1"> <input type="button" value="remove" id="but2"> <script> $("#but1").click(function(){ $("#dv1").empty(); }) $("#but2").click(function(){ $("#dv2").remove(); }) </script> </body> </html>

submit Reset Code

Automatic operation

The difference between jQuery DOM operation empty and remove

ElementaryImperial CMS enterprise imitation website tutorial

ElementaryNewbies with zero foundation in WordPress build personal blogs and corporate websites

ElementaryUltimate CMS zero-based website building instruction video

ElementaryFront-end project-Shangyou [HTML/CSS/JS technology comprehensive practice]

IntermediateVue3.0 from 0 to build a universal backend management system project practice

ElementaryZero-based front-end course [Vue advanced learning and practical application]

ElementaryWEB front-end tutorial [HTML5+CSS3+JS]

ElementaryQuick introduction to apipost

IntermediateVue3+TypeScript practical tutorial-enterprise-level project practice

ElementaryLet's briefly talk about starting a business in PHP

IntermediateVUE e-commerce project (front-end & back-end dual project actual combat)

ElementaryApipost practical application [api, interface, automated testing, mock]