Detailed explanation of jQuery.clone() function example-JS Tutorial-php.cn

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Detailed explanation of jQuery.clone() function example

巴扎黑

May 19, 2018 pm 04:16 PM

function Example Detailed explanation

The

clone() function is used to clone a copy of the current matching element collection and returns it in the form of a jQuery object. You can also simply understand it as: clone the current jQuery object.

You can also specify whether to copy additional data (data() function) of these matching elements (even their child elements) and bind events.

This function belongs to the jQuery object (instance).

Syntax

jQueryObject.clone( withDataAndEvents [, deepWithDataAndEvents ] )

Parameters

Parameter Description

withDataAndEvents Optional/Boolean type Whether to copy the element's additional data and binding events at the same time, the default is false.

deepWithDataAndEvents Optional/Boolean type Whether to copy the additional data and binding events of all sub-elements of the element at the same time, the default value is the value of the parameter withDataAndEvents.

clone() is mainly used to clone a copy of the current jQuery object.

jQuery 1.5 New support: clone() supports the second parameter deepWithDataAndEvents. This parameter indicates whether to copy additional data and binding events for all child elements of the cloned element at the same time.

Note:

1. Before jQuery 1.4, the clone() function only additionally copied the binding event of the element. Starting from version 1.4, it began to support copying additional data of the element.

2. In version 1.5.0 (only 1.5.0), the default value of the parameter withDataAndEvents was incorrectly set to true. Starting from 1.5.1, its default value was changed back to false.

Return value

clone()The return value of the function is of jQuery type and returns a clone copy of the current jQuery object.

Note: For performance reasons, the clone() function will not copy the dynamics of some form elements, such as the content entered by the user in and the options selected by the user in <select>. However, the dynamics of the <input> element will be copied, such as the content entered by the user in the text and the user's selected <a href="http://www.php.cn/code/8243.html" target="_blank">state</a> of the checkbox. </p> <p>Example & Description</p> <p>The clone() function is used to clone the current jQuery object. Please refer to the following HTML code as an example: </p><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class='brush:php;toolbar:false;'><p id="n1"> <input id="n2" type="button" value="按钮1" /> <input id="n3" type="button" value="按钮2" /> </p></pre><div class="contentsignin">Copy after login</div></div><p>The following jQuery sample code is used to demonstrate the specific usage of the clone() function: </p> <p>// Current jQuery version: 1.11.1</p> <p>$(":button").click( function(){</p> <p> <a href="http://www.php.cn/code/658.html" target="_blank">document</a>.writeln( this.value );</p> <p>} );</p> <p>var $n2 = $("#n2");</p> <p>$n2.data("myData", "Additional data");</p> <p>//There is no cloning of additional data and binding Fixed event</p> <p>var $clonedN2 = $n2.clone(); // Both parameters default to false</p> <p>document.writeln( $clonedN2.data("myData") ); / / undefined</p> <p>$clonedN2.trigger("click"); // (No bound click event, no response output)</p> <p>//Clone additional data and binding events at the same time</p> <p>var $clonedN2WithCopy = $n2.clone( true ); // Two parameters: true, true (the second parameter is not set, the default is the value of the first parameter)</p> <p>document. writeln( $clonedN2WithCopy.data("myData") ); // Additional data</p> <p>$clonedN2WithCopy.trigger("click"); // Button 1</p><p>The above is the detailed content of Detailed explanation of jQuery.clone() function example. 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Use meaningful naming. Handle special situations. Use appropriate visibility.</p> </div> <div class="phphistorical_Version2_mids"> <a href="https://www.php.cn/faq/779485.html" title="Complete collection of excel function formulas" class="phphistorical_Version2_mids_img"> <img onerror="this.onerror=''; this.src='/static/imghw/default1.png'" src="/static/imghw/default1.png" class="lazy" data-src="https://img.php.cn/upload/article/202405/07/2024050712043926086.jpg?x-oss-process=image/resize,m_fill,h_207,w_330" alt="Complete collection of excel function formulas" /> </a> <a href="https://www.php.cn/faq/779485.html" title="Complete collection of excel function formulas" class="phphistorical_Version2_mids_title">Complete collection of excel function formulas</a> <span class="Articlelist_txts_time">May 07, 2024 pm 12:04 PM</span> <p class="Articlelist_txts_p">1. The SUM function is used to sum the numbers in a column or a group of cells, for example: =SUM(A1:J10). 2. The AVERAGE function is used to calculate the average of the numbers in a column or a group of cells, for example: =AVERAGE(A1:A10). 3. COUNT function, used to count the number of numbers or text in a column or a group of cells, for example: =COUNT(A1:A10) 4. IF function, used to make logical judgments based on specified conditions and return the corresponding result.</p> </div> <div class="phphistorical_Version2_mids"> <a href="https://www.php.cn/faq/757999.html" title="Comparison of the advantages and disadvantages of C++ function default parameters and variable parameters" class="phphistorical_Version2_mids_img"> <img onerror="this.onerror=''; this.src='/static/imghw/default1.png'" src="/static/imghw/default1.png" class="lazy" data-src="https://img.php.cn/upload/article/000/000/164/171366606427390.jpg?x-oss-process=image/resize,m_fill,h_207,w_330" alt="Comparison of the advantages and disadvantages of C++ function default parameters and variable parameters" /> </a> <a href="https://www.php.cn/faq/757999.html" title="Comparison of the advantages and disadvantages of C++ function default parameters and variable parameters" class="phphistorical_Version2_mids_title">Comparison of the advantages and disadvantages of C++ function default parameters and variable parameters</a> <span class="Articlelist_txts_time">Apr 21, 2024 am 10:21 AM</span> <p class="Articlelist_txts_p">The advantages of default parameters in C++ functions include simplifying calls, enhancing readability, and avoiding errors. The disadvantages are limited flexibility and naming restrictions. Advantages of variadic parameters include unlimited flexibility and dynamic binding. Disadvantages include greater complexity, implicit type conversions, and difficulty in debugging.</p> </div> <div class="phphistorical_Version2_mids"> <a href="https://www.php.cn/faq/757489.html" title="What are the benefits of C++ functions returning reference types?" class="phphistorical_Version2_mids_img"> <img onerror="this.onerror=''; this.src='/static/imghw/default1.png'" src="/static/imghw/default1.png" class="lazy" data-src="https://img.php.cn/upload/article/000/887/227/171361872126500.jpg?x-oss-process=image/resize,m_fill,h_207,w_330" alt="What are the benefits of C++ functions returning reference types?" /> </a> <a href="https://www.php.cn/faq/757489.html" title="What are the benefits of C++ functions returning reference types?" class="phphistorical_Version2_mids_title">What are the benefits of C++ functions returning reference types?</a> <span class="Articlelist_txts_time">Apr 20, 2024 pm 09:12 PM</span> <p class="Articlelist_txts_p">The benefits of functions returning reference types in C++ include: Performance improvements: Passing by reference avoids object copying, thus saving memory and time. Direct modification: The caller can directly modify the returned reference object without reassigning it. Code simplicity: Passing by reference simplifies the code and requires no additional assignment operations.</p> </div> <div class="phphistorical_Version2_mids"> <a href="https://www.php.cn/faq/758862.html" title="What is the difference between custom PHP functions and predefined functions?" class="phphistorical_Version2_mids_img"> <img onerror="this.onerror=''; this.src='/static/imghw/default1.png'" src="/static/imghw/default1.png" class="lazy" data-src="https://img.php.cn/upload/article/000/465/014/171376686871416.jpg?x-oss-process=image/resize,m_fill,h_207,w_330" alt="What is the difference between custom PHP functions and predefined functions?" /> </a> <a href="https://www.php.cn/faq/758862.html" title="What is the difference between custom PHP functions and predefined functions?" class="phphistorical_Version2_mids_title">What is the difference between custom PHP functions and predefined functions?</a> <span class="Articlelist_txts_time">Apr 22, 2024 pm 02:21 PM</span> <p class="Articlelist_txts_p">The difference between custom PHP functions and predefined functions is: Scope: Custom functions are limited to the scope of their definition, while predefined functions are accessible throughout the script. How to define: Custom functions are defined using the function keyword, while predefined functions are defined by the PHP kernel. Parameter passing: Custom functions receive parameters, while predefined functions may not require parameters. Extensibility: Custom functions can be created as needed, while predefined functions are built-in and cannot be modified.</p> </div> <div class="phphistorical_Version2_mids"> <a href="https://www.php.cn/faq/773198.html" title="C++ Function Exception Advanced: Customized Error Handling" class="phphistorical_Version2_mids_img"> <img onerror="this.onerror=''; this.src='/static/imghw/default1.png'" src="/static/imghw/default1.png" class="lazy" data-src="https://img.php.cn/upload/article/000/465/014/171455994276383.jpg?x-oss-process=image/resize,m_fill,h_207,w_330" alt="C++ Function Exception Advanced: Customized Error Handling" /> </a> <a href="https://www.php.cn/faq/773198.html" title="C++ Function Exception Advanced: Customized Error Handling" class="phphistorical_Version2_mids_title">C++ Function Exception Advanced: Customized Error Handling</a> <span class="Articlelist_txts_time">May 01, 2024 pm 06:39 PM</span> <p class="Articlelist_txts_p">Exception handling in C++ can be enhanced through custom exception classes that provide specific error messages, contextual information, and perform custom actions based on the error type. Define an exception class inherited from std::exception to provide specific error information. Use the throw keyword to throw a custom exception. Use dynamic_cast in a try-catch block to convert the caught exception to a custom exception type. In the actual case, the open_file function throws a FileNotFoundException exception. Catching and handling the exception can provide a more specific error message.</p> </div> </div> <a href="https://www.php.cn/web-designer.html" class="phpgenera_Details_mainL4_botton"> <span>See all articles</span> <img src="/static/imghw/down_right.png" alt="" /> </a> </div> </div> </div> </main> <footer> <div class="footer"> <div class="footertop"> <img src="/static/imghw/logo.png" alt=""> <p>Public welfare online PHP training，Help PHP learners grow quickly！</p> </div> <div class="footermid"> <a href="https://www.php.cn/about/us.html">About us</a> <a href="https://www.php.cn/about/disclaimer.html">Disclaimer</a> <a href="https://www.php.cn/update/article_0_1.html">Sitemap</a> </div> <div class="footerbottom"> <p> © php.cn All rights reserved </p> </div> </div> </footer> <input type="hidden" id="verifycode" value="/captcha.html"> <script>layui.use(['element', 'carousel'], function () {var element = layui.element;$ = layui.jquery;var carousel = layui.carousel;carousel.render({elem: '#test1', width: '100%', height: '330px', arrow: 'always'});$.getScript('/static/js/jquery.lazyload.min.js', function () {$("img").lazyload({placeholder: "/static/images/load.jpg", effect: "fadeIn", threshold: 200, skip_invisible: false});});});</script> <script src="/static/js/common_new.js"></script> <script type="text/javascript" src="/static/js/jquery.cookie.js?1744592117"></script> <script src="https://vdse.bdstatic.com//search-video.v1.min.js"></script> <link rel='stylesheet' id='_main-css' href='/static/css/viewer.min.css?2' type='text/css' media='all' /> <script type='text/javascript' src='/static/js/viewer.min.js?1'></script> <script type='text/javascript' src='/static/js/jquery-viewer.min.js'></script> <script type="text/javascript" src="/static/js/global.min.js?5.5.53"></script> <script> var _paq = window._paq = window._paq || []; /* tracker methods like "setCustomDimension" should be called before "trackPageView" */ _paq.push(['trackPageView']); _paq.push(['enableLinkTracking']); (function () { var u = "https://tongji.php.cn/"; _paq.push(['setTrackerUrl', u + 'matomo.php']); _paq.push(['setSiteId', '9']); var d = document, g = d.createElement('script'), s = d.getElementsByTagName('script')[0]; g.async = true; g.src = u + 'matomo.js'; s.parentNode.insertBefore(g, s); })(); </script> <script> // top layui.use(function () { var util = layui.util; util.fixbar({ on: { mouseenter: function (type) { layer.tips(type, this, { tips: 4, fixed: true, }); }, mouseleave: function (type) { layer.closeAll("tips"); }, }, }); }); document.addEventListener("DOMContentLoaded", (event) => { // 定义一个函数来处理滚动链接的点击事件 function setupScrollLink(scrollLinkId, targetElementId) { const scrollLink = document.getElementById(scrollLinkId); const targetElement = document.getElementById(targetElementId); if (scrollLink && targetElement) { scrollLink.addEventListener("click", (e) => { e.preventDefault(); // 阻止默认链接行为 targetElement.scrollIntoView({ behavior: "smooth" }); // 平滑滚动到目标元素 }); } else { console.warn( `Either scroll link with ID '${scrollLinkId}' or target element with ID '${targetElementId}' not found.` ); } } // 使用该函数设置多个滚动链接 setupScrollLink("Article_Details_main1L2s_1", "article_main_title1"); setupScrollLink("Article_Details_main1L2s_2", "article_main_title2"); setupScrollLink("Article_Details_main1L2s_3", "article_main_title3"); setupScrollLink("Article_Details_main1L2s_4", "article_main_title4"); setupScrollLink("Article_Details_main1L2s_5", "article_main_title5"); setupScrollLink("Article_Details_main1L2s_6", "article_main_title6"); // 可以继续添加更多的滚动链接设置 }); window.addEventListener("scroll", function () { var fixedElement = document.getElementById("Article_Details_main1Lmain"); var scrollTop = window.scrollY || document.documentElement.scrollTop; // 兼容不同浏览器 var clientHeight = window.innerHeight || document.documentElement.clientHeight; // 视口高度 var scrollHeight = document.documentElement.scrollHeight; // 页面总高度 // 计算距离底部的距离 var distanceToBottom = scrollHeight - scrollTop - clientHeight; // 当距离底部小于或等于300px时，取消固定定位 if (distanceToBottom <= 980) { fixedElement.classList.remove("Article_Details_main1Lmain"); fixedElement.classList.add("Article_Details_main1Lmain_relative"); } else { // 否则，保持固定定位 fixedElement.classList.remove("Article_Details_main1Lmain_relative"); fixedElement.classList.add("Article_Details_main1Lmain"); } }); </script> </body> </html>