jQuery.clone() 函数实例详解-js教程-PHP中文网

首页

web前端

js教程

jQuery.clone() 函数实例详解

巴扎黑

May 19, 2018 pm 04:16 PM

函数实例详解

clone()函数用于克隆当前匹配元素集合的一个副本，并以jQuery对象的形式返回。你也可以简单地理解为：克隆当前jQuery对象。

你还可以指定是否复制这些匹配元素(甚至它们的子元素)的附加数据( data()函数 )和绑定事件。

该函数属于jQuery对象(实例)。

语法

jQueryObject.clone( withDataAndEvents [, deepWithDataAndEvents ] )

参数

参数描述

withDataAndEvents 可选/Boolean类型是否同时复制元素的附加数据和绑定事件，默认为false。

deepWithDataAndEvents 可选/Boolean类型是否同时复制元素的所有子元素的附加数据和绑定事件，默认值即为参数withDataAndEvents的值。

clone()主要用于克隆当前jQuery对象的一个副本。

jQuery 1.5 新增支持：clone()支持第二个参数deepWithDataAndEvents。该参数指示是否同时复制被克隆元素的所有子元素的附加数据和绑定事件。

注意：

1、在jQuery 1.4之前，clone()函数只额外复制元素的绑定事件，从1.4版本开始，才开始支持复制元素的附加数据。

2、1.5.0版本时(只有1.5.0)，参数withDataAndEvents的默认值被错误地设定为true，从1.5.1开始，其默认值才被改回false。

返回值

clone()函数的返回值为jQuery类型，返回当前jQuery对象的一个克隆副本。

注意：出于性能原因考虑，clone()函数不会复制某些表单元素的动态，例如用户在输入的内容、用户在<select>中选择的选项。不过<input>元素的动态将会被复制，例如用户在text中输入的内容、用户对checkbox的选中<a href="http://www.php.cn/code/8243.html" target="_blank">状态</a>。</p> <p>示例&说明</p> <p>clone()函数用于克隆当前jQuery对象。请参考下面这段HTML代码为例：</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">登录后复制</div></div><p>以下jQuery示例代码用于演示clone()函数的具体用法：</p> <p>// 当前jQuery版本：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", "附加数据");</p> <p>//没有克隆附加数据和绑定事件</p> <p>var $clonedN2 = $n2.clone(); // 两个参数均默认为false</p> <p>document.writeln( $clonedN2.data("myData") ); // undefined</p> <p>$clonedN2.trigger("click"); // (没有绑定的点击事件，无响应输出)</p> <p>//同时克隆附加数据和绑定事件</p> <p>var $clonedN2WithCopy = $n2.clone( true ); // 两个参数：true、true(第二个参数不设置，默认为第一个参数的值)</p> <p>document.writeln( $clonedN2WithCopy.data("myData") ); // 附加数据</p> <p>$clonedN2WithCopy.trigger("click"); // 按钮1</p><p>以上是jQuery.clone() 函数实例详解的详细内容。更多信息请关注PHP中文网其他相关文章！</p> </div> </div> <div class="wzconShengming_sp"> <div class="bzsmdiv_sp">本站声明</div> <div>本文内容由网友自发贡献，版权归原作者所有，本站不承担相应法律责任。如您发现有涉嫌抄袭侵权的内容，请联系admin@php.cn</div> </div> </div> <ins class="adsbygoogle" style="display:block" data-ad-format="autorelaxed" data-ad-client="ca-pub-5902227090019525" data-ad-slot="2507867629"></ins> <script> (adsbygoogle = window.adsbygoogle || []).push({}); </script> <div class="AI_ToolDetails_main4sR"> <ins class="adsbygoogle" style="display:block" data-ad-client="ca-pub-5902227090019525" data-ad-slot="3653428331" data-ad-format="auto" data-full-width-responsive="true"></ins> <script> (adsbygoogle = window.adsbygoogle || []).push({}); </script>  <div class="phpgenera_Details_mainR3"> <div class="phpmain1_4R_readrank"> <div class="phpmain1_4R_readrank_top"> <img onerror="this.onerror=''; this.src='/static/imghw/default1.png'" onerror="this.onerror=''; this.src='/static/imghw/default1.png'" src="/static/imghw/hottools2.png" alt="" /> <h2>热AI工具</h2> </div> <div class="phpgenera_Details_mainR3_bottom"> <div class="phpmain_tab2_mids_top"> <a href="https://www.php.cn/zh/ai/undresserai-undress" title="Undresser.AI Undress" class="phpmain_tab2_mids_top_img"> <img onerror="this.onerror=''; this.src='/static/imghw/default1.png'" onerror="this.onerror=''; this.src='/static/imghw/default1.png'" class="lazy" data-src="https://img.php.cn/upload/ai_manual/001/246/273/173411540686492.jpg?x-oss-process=image/resize,m_fill,h_50,w_50" src="/static/imghw/default1.png" alt="Undresser.AI Undress" /> </a> <div class="phpmain_tab2_mids_info"> <a href="https://www.php.cn/zh/ai/undresserai-undress" title="Undresser.AI Undress" class="phpmain_tab2_mids_title"> <h3>Undresser.AI Undress</h3> </a> <p>人工智能驱动的应用程序，用于创建逼真的裸体照片</p> </div> </div> <div class="phpmain_tab2_mids_top"> <a href="https://www.php.cn/zh/ai/ai-clothes-remover" title="AI Clothes Remover" class="phpmain_tab2_mids_top_img"> <img onerror="this.onerror=''; this.src='/static/imghw/default1.png'" onerror="this.onerror=''; this.src='/static/imghw/default1.png'" class="lazy" data-src="https://img.php.cn/upload/ai_manual/001/246/273/173411552797167.jpg?x-oss-process=image/resize,m_fill,h_50,w_50" src="/static/imghw/default1.png" alt="AI Clothes Remover" /> </a> <div class="phpmain_tab2_mids_info"> <a href="https://www.php.cn/zh/ai/ai-clothes-remover" title="AI Clothes Remover" class="phpmain_tab2_mids_title"> <h3>AI Clothes Remover</h3> </a> <p>用于从照片中去除衣服的在线人工智能工具。</p> </div> </div> <div class="phpmain_tab2_mids_top"> <a href="https://www.php.cn/zh/ai/undress-ai-tool" title="Undress AI Tool" class="phpmain_tab2_mids_top_img"> <img onerror="this.onerror=''; this.src='/static/imghw/default1.png'" onerror="this.onerror=''; this.src='/static/imghw/default1.png'" class="lazy" data-src="https://img.php.cn/upload/ai_manual/001/246/273/173410641626608.jpg?x-oss-process=image/resize,m_fill,h_50,w_50" src="/static/imghw/default1.png" alt="Undress AI Tool" /> </a> <div class="phpmain_tab2_mids_info"> <a href="https://www.php.cn/zh/ai/undress-ai-tool" title="Undress AI Tool" class="phpmain_tab2_mids_title"> <h3>Undress AI Tool</h3> </a> <p>免费脱衣服图片</p> </div> </div> <div class="phpmain_tab2_mids_top"> <a href="https://www.php.cn/zh/ai/clothoffio" title="Clothoff.io" class="phpmain_tab2_mids_top_img"> <img onerror="this.onerror=''; this.src='/static/imghw/default1.png'" onerror="this.onerror=''; this.src='/static/imghw/default1.png'" class="lazy" data-src="https://img.php.cn/upload/ai_manual/001/246/273/173411529149311.jpg?x-oss-process=image/resize,m_fill,h_50,w_50" src="/static/imghw/default1.png" alt="Clothoff.io" /> </a> <div class="phpmain_tab2_mids_info"> <a href="https://www.php.cn/zh/ai/clothoffio" title="Clothoff.io" class="phpmain_tab2_mids_title"> <h3>Clothoff.io</h3> </a> <p>AI脱衣机</p> </div> </div> <div class="phpmain_tab2_mids_top"> <a href="https://www.php.cn/zh/ai/ai-hentai-generator" title="AI Hentai Generator" class="phpmain_tab2_mids_top_img"> <img onerror="this.onerror=''; this.src='/static/imghw/default1.png'" onerror="this.onerror=''; this.src='/static/imghw/default1.png'" class="lazy" data-src="https://img.php.cn/upload/ai_manual/001/246/273/173405034393877.jpg?x-oss-process=image/resize,m_fill,h_50,w_50" src="/static/imghw/default1.png" alt="AI Hentai Generator" /> </a> <div class="phpmain_tab2_mids_info"> <a href="https://www.php.cn/zh/ai/ai-hentai-generator" title="AI Hentai Generator" class="phpmain_tab2_mids_title"> <h3>AI Hentai Generator</h3> </a> <p>免费生成ai无尽的。</p> </div> </div> </div> <div class="phpgenera_Details_mainR3_more"> <a href="https://www.php.cn/zh/ai">显示更多</a> </div> </div> </div> <script src="https://sw.php.cn/hezuo/cac1399ab368127f9b113b14eb3316d0.js" type="text/javascript"></script> <div class="phpgenera_Details_mainR4"> <div class="phpmain1_4R_readrank"> <div class="phpmain1_4R_readrank_top"> <img onerror="this.onerror=''; this.src='/static/imghw/default1.png'" onerror="this.onerror=''; this.src='/static/imghw/default1.png'" src="/static/imghw/hotarticle2.png" alt="" /> <h2>热门文章</h2> </div> <div class="phpgenera_Details_mainR4_bottom"> <div class="phpgenera_Details_mainR4_bottoms"> <a href="https://www.php.cn/zh/faq/1796780570.html" title="R.E.P.O.能量晶体解释及其做什么（黄色晶体）" class="phpgenera_Details_mainR4_bottom_title">R.E.P.O.能量晶体解释及其做什么（黄色晶体）</a> <div class="phpgenera_Details_mainR4_bottoms_info"> <span>3 周前</span> <span>By 尊渡假赌尊渡假赌尊渡假赌</span> </div> </div> <div class="phpgenera_Details_mainR4_bottoms"> <a href="https://www.php.cn/zh/faq/1796780641.html" title="R.E.P.O.最佳图形设置" class="phpgenera_Details_mainR4_bottom_title">R.E.P.O.最佳图形设置</a> <div class="phpgenera_Details_mainR4_bottoms_info"> <span>3 周前</span> <span>By 尊渡假赌尊渡假赌尊渡假赌</span> </div> </div> <div class="phpgenera_Details_mainR4_bottoms"> <a href="https://www.php.cn/zh/faq/1796785841.html" title="刺客信条阴影：贝壳谜语解决方案" class="phpgenera_Details_mainR4_bottom_title">刺客信条阴影：贝壳谜语解决方案</a> <div class="phpgenera_Details_mainR4_bottoms_info"> <span>2 周前</span> <span>By DDD</span> </div> </div> <div class="phpgenera_Details_mainR4_bottoms"> <a href="https://www.php.cn/zh/faq/1796780520.html" title="R.E.P.O.如果您听不到任何人，如何修复音频" class="phpgenera_Details_mainR4_bottom_title">R.E.P.O.如果您听不到任何人，如何修复音频</a> <div class="phpgenera_Details_mainR4_bottoms_info"> <span>3 周前</span> <span>By 尊渡假赌尊渡假赌尊渡假赌</span> </div> </div> <div class="phpgenera_Details_mainR4_bottoms"> <a href="https://www.php.cn/zh/faq/1796779766.html" title="WWE 2K25：如何解锁Myrise中的所有内容" class="phpgenera_Details_mainR4_bottom_title">WWE 2K25：如何解锁Myrise中的所有内容</a> <div class="phpgenera_Details_mainR4_bottoms_info"> <span>4 周前</span> <span>By 尊渡假赌尊渡假赌尊渡假赌</span> </div> </div> </div> <div class="phpgenera_Details_mainR3_more"> <a href="https://www.php.cn/zh/article.html">显示更多</a> </div> </div> </div> <div class="phpgenera_Details_mainR3"> <div class="phpmain1_4R_readrank"> <div class="phpmain1_4R_readrank_top"> <img onerror="this.onerror=''; this.src='/static/imghw/default1.png'" onerror="this.onerror=''; this.src='/static/imghw/default1.png'" src="/static/imghw/hottools2.png" alt="" /> <h2>热工具</h2> </div> <div class="phpgenera_Details_mainR3_bottom"> <div class="phpmain_tab2_mids_top"> <a href="https://www.php.cn/zh/toolset/development-tools/92" title="记事本++7.3.1" class="phpmain_tab2_mids_top_img"> <img onerror="this.onerror=''; this.src='/static/imghw/default1.png'" onerror="this.onerror=''; this.src='/static/imghw/default1.png'" class="lazy" data-src="https://img.php.cn/upload/manual/000/000/001/58ab96f0f39f7357.jpg?x-oss-process=image/resize,m_fill,h_50,w_72" src="/static/imghw/default1.png" alt="记事本++7.3.1" /> </a> <div class="phpmain_tab2_mids_info"> <a href="https://www.php.cn/zh/toolset/development-tools/92" title="记事本++7.3.1" class="phpmain_tab2_mids_title"> <h3>记事本++7.3.1</h3> </a> <p>好用且免费的代码编辑器</p> </div> </div> <div class="phpmain_tab2_mids_top"> <a href="https://www.php.cn/zh/toolset/development-tools/93" title="SublimeText3汉化版" class="phpmain_tab2_mids_top_img"> <img onerror="this.onerror=''; this.src='/static/imghw/default1.png'" onerror="this.onerror=''; this.src='/static/imghw/default1.png'" class="lazy" data-src="https://img.php.cn/upload/manual/000/000/001/58ab97a3baad9677.jpg?x-oss-process=image/resize,m_fill,h_50,w_72" src="/static/imghw/default1.png" alt="SublimeText3汉化版" /> </a> <div class="phpmain_tab2_mids_info"> <a href="https://www.php.cn/zh/toolset/development-tools/93" title="SublimeText3汉化版" class="phpmain_tab2_mids_title"> <h3>SublimeText3汉化版</h3> </a> <p>中文版，非常好用</p> </div> </div> <div class="phpmain_tab2_mids_top"> <a href="https://www.php.cn/zh/toolset/development-tools/121" title="禅工作室 13.0.1" class="phpmain_tab2_mids_top_img"> <img onerror="this.onerror=''; this.src='/static/imghw/default1.png'" onerror="this.onerror=''; this.src='/static/imghw/default1.png'" class="lazy" data-src="https://img.php.cn/upload/manual/000/000/001/58ab97ecd1ab2670.jpg?x-oss-process=image/resize,m_fill,h_50,w_72" src="/static/imghw/default1.png" alt="禅工作室 13.0.1" /> </a> <div class="phpmain_tab2_mids_info"> <a href="https://www.php.cn/zh/toolset/development-tools/121" title="禅工作室 13.0.1" class="phpmain_tab2_mids_title"> <h3>禅工作室 13.0.1</h3> </a> <p>功能强大的PHP集成开发环境</p> </div> </div> <div class="phpmain_tab2_mids_top"> <a href="https://www.php.cn/zh/toolset/development-tools/469" title="Dreamweaver CS6" class="phpmain_tab2_mids_top_img"> <img onerror="this.onerror=''; this.src='/static/imghw/default1.png'" onerror="this.onerror=''; this.src='/static/imghw/default1.png'" class="lazy" data-src="https://img.php.cn/upload/manual/000/000/001/58d0e0fc74683535.jpg?x-oss-process=image/resize,m_fill,h_50,w_72" src="/static/imghw/default1.png" alt="Dreamweaver CS6" /> </a> <div class="phpmain_tab2_mids_info"> <a href="https://www.php.cn/zh/toolset/development-tools/469" title="Dreamweaver CS6" class="phpmain_tab2_mids_title"> <h3>Dreamweaver CS6</h3> </a> <p>视觉化网页开发工具</p> </div> </div> <div class="phpmain_tab2_mids_top"> <a href="https://www.php.cn/zh/toolset/development-tools/500" title="SublimeText3 Mac版" class="phpmain_tab2_mids_top_img"> <img onerror="this.onerror=''; this.src='/static/imghw/default1.png'" onerror="this.onerror=''; this.src='/static/imghw/default1.png'" class="lazy" data-src="https://img.php.cn/upload/manual/000/000/001/58d34035e2757995.png?x-oss-process=image/resize,m_fill,h_50,w_72" src="/static/imghw/default1.png" alt="SublimeText3 Mac版" /> </a> <div class="phpmain_tab2_mids_info"> <a href="https://www.php.cn/zh/toolset/development-tools/500" title="SublimeText3 Mac版" class="phpmain_tab2_mids_title"> <h3>SublimeText3 Mac版</h3> </a> <p>神级代码编辑软件(SublimeText3)</p> </div> </div> </div> <div class="phpgenera_Details_mainR3_more"> <a href="https://www.php.cn/zh/ai">显示更多</a> </div> </div> </div> <div class="phpgenera_Details_mainR4"> <div class="phpmain1_4R_readrank"> <div class="phpmain1_4R_readrank_top"> <img onerror="this.onerror=''; this.src='/static/imghw/default1.png'" onerror="this.onerror=''; this.src='/static/imghw/default1.png'" src="/static/imghw/hotarticle2.png" alt="" /> <h2>热门话题</h2> </div> <div class="phpgenera_Details_mainR4_bottom"> <div class="phpgenera_Details_mainR4_bottoms"> <a href="https://www.php.cn/zh/faq/gmailyxdlrkzn" title="gmail邮箱登陆入口在哪里" class="phpgenera_Details_mainR4_bottom_title">gmail邮箱登陆入口在哪里</a> <div class="phpgenera_Details_mainR4_bottoms_info"> <div class="phpgenera_Details_mainR4_bottoms_infos"> <img src="/static/imghw/eyess.png" alt="" /> <span>7480</span> </div> <div class="phpgenera_Details_mainR4_bottoms_infos"> <img src="/static/imghw/tiezi.png" alt="" /> <span>15</span> </div> </div> </div> <div class="phpgenera_Details_mainR4_bottoms"> <a href="https://www.php.cn/zh/faq/cakephp-tutor" title="CakePHP 教程" class="phpgenera_Details_mainR4_bottom_title">CakePHP 教程</a> <div class="phpgenera_Details_mainR4_bottoms_info"> <div class="phpgenera_Details_mainR4_bottoms_infos"> <img src="/static/imghw/eyess.png" alt="" /> <span>1377</span> </div> <div class="phpgenera_Details_mainR4_bottoms_infos"> <img src="/static/imghw/tiezi.png" alt="" /> <span>52</span> </div> </div> </div> <div class="phpgenera_Details_mainR4_bottoms"> <a href="https://www.php.cn/zh/faq/steamdzhmcssmgs" title="steam的账户名称是什么格式" class="phpgenera_Details_mainR4_bottom_title">steam的账户名称是什么格式</a> <div class="phpgenera_Details_mainR4_bottoms_info"> <div class="phpgenera_Details_mainR4_bottoms_infos"> <img src="/static/imghw/eyess.png" alt="" /> <span>77</span> </div> <div class="phpgenera_Details_mainR4_bottoms_infos"> <img src="/static/imghw/tiezi.png" alt="" /> <span>11</span> </div> </div> </div> <div class="phpgenera_Details_mainR4_bottoms"> <a href="https://www.php.cn/zh/faq/winactivationkeyper" title="win11激活密钥永久" class="phpgenera_Details_mainR4_bottom_title">win11激活密钥永久</a> <div class="phpgenera_Details_mainR4_bottoms_info"> <div class="phpgenera_Details_mainR4_bottoms_infos"> <img src="/static/imghw/eyess.png" alt="" /> <span>51</span> </div> <div class="phpgenera_Details_mainR4_bottoms_infos"> <img src="/static/imghw/tiezi.png" alt="" /> <span>19</span> </div> </div> </div> <div class="phpgenera_Details_mainR4_bottoms"> <a href="https://www.php.cn/zh/faq/newyorktimesdailybrief" title="NYT连接提示和答案" class="phpgenera_Details_mainR4_bottom_title">NYT连接提示和答案</a> <div class="phpgenera_Details_mainR4_bottoms_info"> <div class="phpgenera_Details_mainR4_bottoms_infos"> <img src="/static/imghw/eyess.png" alt="" /> <span>19</span> </div> <div class="phpgenera_Details_mainR4_bottoms_infos"> <img src="/static/imghw/tiezi.png" alt="" /> <span>33</span> </div> </div> </div> </div> <div class="phpgenera_Details_mainR3_more"> <a href="https://www.php.cn/zh/faq/zt">显示更多</a> </div> </div> </div> </div> </div> <div class="Article_Details_main2"> <div class="phpgenera_Details_mainL4"> <div class="phpmain1_2_top"> <a href="javascript:void(0);" class="phpmain1_2_top_title">Related knowledge<img src="/static/imghw/index2_title2.png" alt="" /></a> </div> <div class="phpgenera_Details_mainL4_info"> <div class="phphistorical_Version2_mids"> <a href="https://www.php.cn/zh/faq/764085.html" title="golang函数动态创建新函数的技巧" 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/000/000/164/171402714383961.jpg?x-oss-process=image/resize,m_fill,h_207,w_330" alt="golang函数动态创建新函数的技巧" /> </a> <a href="https://www.php.cn/zh/faq/764085.html" title="golang函数动态创建新函数的技巧" class="phphistorical_Version2_mids_title">golang函数动态创建新函数的技巧</a> <span class="Articlelist_txts_time">Apr 25, 2024 pm 02:39 PM</span> <p class="Articlelist_txts_p">Go语言提供了两种动态函数创建技术：closures和反射。closures允许访问闭包作用域内的变量，而反射可使用FuncOf函数创建新函数。这些技术在自定义HTTP路由器、实现高度可定制的系统和构建可插拔的组件方面非常有用。</p> </div> <div class="phphistorical_Version2_mids"> <a href="https://www.php.cn/zh/faq/762565.html" title="C++ 函数命名中参数顺序的考虑" 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/000/887/227/171394686373748.jpg?x-oss-process=image/resize,m_fill,h_207,w_330" alt="C++ 函数命名中参数顺序的考虑" /> </a> <a href="https://www.php.cn/zh/faq/762565.html" title="C++ 函数命名中参数顺序的考虑" class="phphistorical_Version2_mids_title">C++ 函数命名中参数顺序的考虑</a> <span class="Articlelist_txts_time">Apr 24, 2024 pm 04:21 PM</span> <p class="Articlelist_txts_p">在C++函数命名中，考虑参数顺序至关重要，可提高可读性、减少错误并促进重构。常见的参数顺序约定包括：动作-对象、对象-动作、语义意义和遵循标准库。最佳顺序取决于函数目的、参数类型、潜在混淆和语言惯例。</p> </div> <div class="phphistorical_Version2_mids"> <a href="https://www.php.cn/zh/faq/761932.html" title="如何在Java中写出高效和可维护的函数？" 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/000/465/014/171392958354067.jpg?x-oss-process=image/resize,m_fill,h_207,w_330" alt="如何在Java中写出高效和可维护的函数？" /> </a> <a href="https://www.php.cn/zh/faq/761932.html" title="如何在Java中写出高效和可维护的函数？" class="phphistorical_Version2_mids_title">如何在Java中写出高效和可维护的函数？</a> <span class="Articlelist_txts_time">Apr 24, 2024 am 11:33 AM</span> <p class="Articlelist_txts_p">编写高效和可维护的Java函数的关键在于：保持简洁。使用有意义的命名。处理特殊情况。使用适当的可见性。</p> </div> <div class="phphistorical_Version2_mids"> <a href="https://www.php.cn/zh/faq/779485.html" title="excel函数公式大全" 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="excel函数公式大全" /> </a> <a href="https://www.php.cn/zh/faq/779485.html" title="excel函数公式大全" class="phphistorical_Version2_mids_title">excel函数公式大全</a> <span class="Articlelist_txts_time">May 07, 2024 pm 12:04 PM</span> <p class="Articlelist_txts_p">1、 SUM函数，用于对一列或一组单元格中的数字进行求和，例如：=SUM(A1:J10)。2、AVERAGE函数，用于计算一列或一组单元格中的数字的平均值，例如：=AVERAGE(A1:A10)。3、COUNT函数，用于计算一列或一组单元格中的数字或文本的数量，例如：=COUNT(A1:A10)4、IF函数，用于根据指定的条件进行逻辑判断，并返回相应的结果。</p> </div> <div class="phphistorical_Version2_mids"> <a href="https://www.php.cn/zh/faq/757999.html" title="C++ 函数默认参数与可变参数的优缺点比较" 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="C++ 函数默认参数与可变参数的优缺点比较" /> </a> <a href="https://www.php.cn/zh/faq/757999.html" title="C++ 函数默认参数与可变参数的优缺点比较" class="phphistorical_Version2_mids_title">C++ 函数默认参数与可变参数的优缺点比较</a> <span class="Articlelist_txts_time">Apr 21, 2024 am 10:21 AM</span> <p class="Articlelist_txts_p">C++函数中默认参数的优点包括简化调用、增强可读性、避免错误。缺点是限制灵活性、命名限制。可变参数的优点包括无限灵活性、动态绑定。缺点包括复杂性更高、隐式类型转换、调试困难。</p> </div> <div class="phphistorical_Version2_mids"> <a href="https://www.php.cn/zh/faq/757489.html" title="C++ 函数返回引用类型有什么好处？" 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="C++ 函数返回引用类型有什么好处？" /> </a> <a href="https://www.php.cn/zh/faq/757489.html" title="C++ 函数返回引用类型有什么好处？" class="phphistorical_Version2_mids_title">C++ 函数返回引用类型有什么好处？</a> <span class="Articlelist_txts_time">Apr 20, 2024 pm 09:12 PM</span> <p class="Articlelist_txts_p">C++中的函数返回引用类型的好处包括：性能提升：引用传递避免了对象复制，从而节省了内存和时间。直接修改：调用方可以直接修改返回的引用对象，而无需重新赋值。代码简洁：引用传递简化了代码，无需额外的赋值操作。</p> </div> <div class="phphistorical_Version2_mids"> <a href="https://www.php.cn/zh/faq/758862.html" title="自定义 PHP 函数和预定义函数之间有什么区别？" 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="自定义 PHP 函数和预定义函数之间有什么区别？" /> </a> <a href="https://www.php.cn/zh/faq/758862.html" title="自定义 PHP 函数和预定义函数之间有什么区别？" class="phphistorical_Version2_mids_title">自定义 PHP 函数和预定义函数之间有什么区别？</a> <span class="Articlelist_txts_time">Apr 22, 2024 pm 02:21 PM</span> <p class="Articlelist_txts_p">自定义PHP函数与预定义函数的区别在于：作用域：自定义函数仅限于其定义范围，而预定义函数可在整个脚本中访问。定义方式：自定义函数使用function关键字定义，而预定义函数由PHP内核定义。参数传递：自定义函数接收参数，而预定义函数可能不需要参数。扩展性：自定义函数可以根据需要创建，而预定义函数是内置的且无法修改。</p> </div> <div class="phphistorical_Version2_mids"> <a href="https://www.php.cn/zh/faq/773198.html" title="C++ 函数异常进阶：定制错误处理" 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++ 函数异常进阶：定制错误处理" /> </a> <a href="https://www.php.cn/zh/faq/773198.html" title="C++ 函数异常进阶：定制错误处理" class="phphistorical_Version2_mids_title">C++ 函数异常进阶：定制错误处理</a> <span class="Articlelist_txts_time">May 01, 2024 pm 06:39 PM</span> <p class="Articlelist_txts_p">C++中的异常处理可通过定制异常类增强，提供特定错误消息、上下文信息以及根据错误类型执行自定义操作。定义继承自std::exception的异常类，提供特定的错误信息。使用throw关键字抛出定制异常。在try-catch块中使用dynamic_cast将捕获到的异常转换为定制异常类型。实战案例中，open_file函数抛出FileNotFoundException异常，捕捉并处理该异常可提供更具体的错误消息。</p> </div> </div> <a href="https://www.php.cn/zh/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>公益在线PHP培训，帮助PHP学习者快速成长！</p> </div> <div class="footermid"> <a href="https://www.php.cn/zh/about/us.html">关于我们</a> <a href="https://www.php.cn/zh/about/disclaimer.html">免责声明</a> <a href="https://www.php.cn/zh/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?1744500245"></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>