search
HomeWeb Front-endFront-end Q&AWhat is the use of jquery to remove dom elements?

jquery uses: 1. The remove() method can delete the specified dom element and all its contents; 2. The detach() method can remove the specified dom element and all its contents. Delete, but the bound event will not be deleted; 3. The empty() method can remove the specified descendant dom element.

What is the use of jquery to remove dom elements?

The operating environment of this tutorial: windows7 system, jquery1.10.2 version, Dell G3 computer.

In jQuery, if we want to delete dom elements, we have the following three methods: remove(), detach() and empty().

1. remove() method

The remove( ) method can delete an element and all its contents.

$(selector).remove()

Example:

<!DOCTYPE html>
<html>

	<head>
		<meta charset="UTF-8">
		<script src="js/jquery-1.10.2.min.js"></script>
		<script>
	$(function () {
            $("#btn").click(function () {
                $("li:nth-child(4)").remove();
            })
        })
    </script>
	</head>
	<body>
		<ul>
			<li>HTML</li>
			<li>CSS</li>
			<li>JavaScript</li>
			<li>jQuery</li>
			<li>Vue.js</li>
		</ul>
		<input id="btn" type="button" value="删除" />
	</body>
</html>

$("li:nth-child(4)").remove() means removing the 4th one under the ul element li element. Remember, in jQuery, except for the two selectors: nth-child() and :nth-of-type(), the subscripts of all other selectors or jQuery methods start from 1. 0 started.

What is the use of jquery to remove dom elements?

2. detach() method

In jQuery, although the functions of detach() and remove() are similar, both It deletes an element and all its contents, but there are obvious differences between the two.

  • The remove() method is used to "completely" remove elements. The so-called "complete" means that not only the element will be deleted, but also the events bound to the element will be deleted; the

  • detach() method is used to "semi-completely" delete the element. The so-called "semi-complete" means that only elements will be deleted, but events bound to the elements will not be deleted.

$(selector).detach()

Example:

<!DOCTYPE html>
<html>

	<head>
		<meta charset="UTF-8">
		<script src="js/jquery-1.10.2.min.js"></script>
		<script>
	$(function () {
            $("li").click(function () {
                alert("欢迎来到PHP中文网!")
            });
            $("#btn").click(function () {
                var $li = $("li:nth-child(4)").detach();
                $($li).appendTo("ul");
            });
        })
    </script>
	</head>
	<body>
		<ul>
			<li>HTML</li>
			<li>CSS</li>
			<li>JavaScript</li>
			<li>jQuery</li>
			<li>Vue.js</li>
		</ul>
		<input id="btn" type="button" value="删除" />
	</body>
</html>

In this example, we add a click event for each li element. Clicking any li element will pop up a dialog frame. After we click the [Delete] button, the item

  • jQuery
  • will be added to the end of the ul element.

    What is the use of jquery to remove dom elements?

    ##But at this time, if you click the
  • jQuery
  • item again, you will find that the previously bound click event exists, and a dialog box will pop up. .

    What is the use of jquery to remove dom elements?

    3. empty() method

    In jQuery, we can use the empty() method to "empty "Some descendant element.


    $(selector).empty()

    Example:


    <!DOCTYPE html>
    <html>
    
    	<head>
    		<meta charset="UTF-8">
    		<script src="js/jquery-1.10.2.min.js"></script>
    		<script>
    			$(function () {
                $("#btn").click(function () {
                    $("ul li:nth-child(4)").empty();
                });
            })
        </script>
    	</head>
    	<body>
    		<ul>
    			<li>HTML</li>
    			<li>CSS</li>
    			<li>JavaScript</li>
    			<li>jQuery</li>
    			<li>Vue.js</li>
    		</ul>
    		<input id="btn" type="button" value="删除" />
    	</body>
    </html>

    What is the use of jquery to remove dom elements?

    [Recommended learning:

    jQuery video tutorial, web front-end

    The above is the detailed content of What is the use of jquery to remove dom elements?. For more information, please follow other related articles on the PHP Chinese website!

    Statement
    The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
    Understanding useState(): A Comprehensive Guide to React State ManagementUnderstanding useState(): A Comprehensive Guide to React State ManagementApr 25, 2025 am 12:21 AM

    useState()isaReacthookusedtomanagestateinfunctionalcomponents.1)Itinitializesandupdatesstate,2)shouldbecalledatthetoplevelofcomponents,3)canleadto'stalestate'ifnotusedcorrectly,and4)performancecanbeoptimizedusinguseCallbackandproperstateupdates.

    What are the advantages of using React?What are the advantages of using React?Apr 25, 2025 am 12:16 AM

    Reactispopularduetoitscomponent-basedarchitecture,VirtualDOM,richecosystem,anddeclarativenature.1)Component-basedarchitectureallowsforreusableUIpieces,improvingmodularityandmaintainability.2)TheVirtualDOMenhancesperformancebyefficientlyupdatingtheUI.

    Debugging in React: Identifying and Resolving Common IssuesDebugging in React: Identifying and Resolving Common IssuesApr 25, 2025 am 12:09 AM

    TodebugReactapplicationseffectively,usethesestrategies:1)AddresspropdrillingwithContextAPIorRedux.2)HandleasynchronousoperationswithuseStateanduseEffect,usingAbortControllertopreventraceconditions.3)OptimizeperformancewithuseMemoanduseCallbacktoavoid

    What is useState() in React?What is useState() in React?Apr 25, 2025 am 12:08 AM

    useState()inReactallowsstatemanagementinfunctionalcomponents.1)Itsimplifiesstatemanagement,makingcodemoreconcise.2)UsetheprevCountfunctiontoupdatestatebasedonitspreviousvalue,avoidingstalestateissues.3)UseuseMemooruseCallbackforperformanceoptimizatio

    useState() vs. useReducer(): Choosing the Right Hook for Your State NeedsuseState() vs. useReducer(): Choosing the Right Hook for Your State NeedsApr 24, 2025 pm 05:13 PM

    ChooseuseState()forsimple,independentstatevariables;useuseReducer()forcomplexstatelogicorwhenstatedependsonpreviousstate.1)useState()isidealforsimpleupdatesliketogglingabooleanorupdatingacounter.2)useReducer()isbetterformanagingmultiplesub-valuesorac

    Managing State with useState(): A Practical TutorialManaging State with useState(): A Practical TutorialApr 24, 2025 pm 05:05 PM

    useState is superior to class components and other state management solutions because it simplifies state management, makes the code clearer, more readable, and is consistent with React's declarative nature. 1) useState allows the state variable to be declared directly in the function component, 2) it remembers the state during re-rendering through the hook mechanism, 3) use useState to utilize React optimizations such as memorization to improve performance, 4) But it should be noted that it can only be called on the top level of the component or in custom hooks, avoiding use in loops, conditions or nested functions.

    When to Use useState() and When to Consider Alternative State Management SolutionsWhen to Use useState() and When to Consider Alternative State Management SolutionsApr 24, 2025 pm 04:49 PM

    UseuseState()forlocalcomponentstatemanagement;consideralternativesforglobalstate,complexlogic,orperformanceissues.1)useState()isidealforsimple,localstate.2)UseglobalstatesolutionslikeReduxorContextforsharedstate.3)OptforReduxToolkitorMobXforcomplexst

    React's Reusable Components: Enhancing Code Maintainability and EfficiencyReact's Reusable Components: Enhancing Code Maintainability and EfficiencyApr 24, 2025 pm 04:45 PM

    ReusablecomponentsinReactenhancecodemaintainabilityandefficiencybyallowingdeveloperstousethesamecomponentacrossdifferentpartsofanapplicationorprojects.1)Theyreduceredundancyandsimplifyupdates.2)Theyensureconsistencyinuserexperience.3)Theyrequireoptim

    See all articles

    Hot AI Tools

    Undresser.AI Undress

    Undresser.AI Undress

    AI-powered app for creating realistic nude photos

    AI Clothes Remover

    AI Clothes Remover

    Online AI tool for removing clothes from photos.

    Undress AI Tool

    Undress AI Tool

    Undress images for free

    Clothoff.io

    Clothoff.io

    AI clothes remover

    Video Face Swap

    Video Face Swap

    Swap faces in any video effortlessly with our completely free AI face swap tool!

    Hot Tools

    PhpStorm Mac version

    PhpStorm Mac version

    The latest (2018.2.1) professional PHP integrated development tool

    Atom editor mac version download

    Atom editor mac version download

    The most popular open source editor

    WebStorm Mac version

    WebStorm Mac version

    Useful JavaScript development tools

    SecLists

    SecLists

    SecLists is the ultimate security tester's companion. It is a collection of various types of lists that are frequently used during security assessments, all in one place. SecLists helps make security testing more efficient and productive by conveniently providing all the lists a security tester might need. List types include usernames, passwords, URLs, fuzzing payloads, sensitive data patterns, web shells, and more. The tester can simply pull this repository onto a new test machine and he will have access to every type of list he needs.

    EditPlus Chinese cracked version

    EditPlus Chinese cracked version

    Small size, syntax highlighting, does not support code prompt function