事件：网页的灵魂，交互的精髓

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移动端的内容改变事件

移动端的虚拟键盘并不能像PC端物理键盘一样监听到键盘的按下和抬起，因此移动端使用了统一的input事件来代替keydown和keyup。当用户在输入框或文本域中输入文字时，input事件就会被触发，使开发者能够及时获取用户输入的内容。

在、里面选中文本时触发</strong></p> </blockquote> <p>select事件在用户在输入框或文本域中选中文本时触发，开发者可以通过监听该事件来实现诸如复制、剪切、粘贴等功能。此外，select事件还可以用来获取用户选中的文本内容，便于进一步处理。</p> <blockquote> <p><strong>change事件：让数据及时更新</strong></p> </blockquote> <p>change事件在用户操作表单元素（如输入框、单选按钮、复选框）后触发，开发者可以通过监听该事件来实现数据的实时更新，保证表单数据的准确性。</p> <blockquote> <p><strong>focus事件：聚焦的时刻</strong></p> </blockquote> <p>focus事件在用户将焦点移入某个元素时触发，开发者可以通过监听该事件来实现一些特殊效果，比如改变元素的样式、显示提示信息等。</p> <blockquote> <p><strong>blur事件：失焦的瞬间</strong></p> </blockquote> <p>blur事件在用户将焦点移出某个元素时触发，开发者可以通过监听该事件来实现一些特殊效果，比如隐藏提示信息、进行表单验证等。</p> <blockquote> <p><strong>DOM事件：元素互动的大舞台</strong></p> </blockquote> <p>DOM事件是一组与文档对象模型（DOM）相关的事件，当文档中发生某些操作时，这些事件就会被触发，比如鼠标点击、键盘输入、页面加载等。开发者可以通过监听DOM事件来实现各种交互效果，让网页更加生动。</p> <blockquote> <p><strong>事件委托：提升效率，优化性能</strong></p> </blockquote> <p>事件委托是一种利用事件冒泡机制来优化事件处理的技巧，它将事件监听器绑定到父元素而不是子元素上，当子元素发生事件时，事件会通过冒泡机制传播到父元素，此时父元素上的事件监听器就会被触发。这样做的好处是减少了事件监听器的数量，提高了性能，同时简化了事件处理逻辑。</p> <blockquote> <p><strong>事件冒泡：事件传播的天然法则</strong></p> </blockquote> <p>事件冒泡是一种事件传播机制，当子元素发生事件时，该事件会逐级向父元素传播，直到到达文档的根元素。在传播过程中，每个元素上的事件监听器都会被触发，开发者可以通过监听事件冒泡来实现一些特殊效果，比如实现点击空白处关闭弹出层的操作。</p> <blockquote> <p><strong>事件传播：事件传递的艺术</strong></p> </blockquote> <p>事件传播是事件在元素之间传递的过程，它分为捕获阶段、目标阶段和冒泡阶段。在捕获阶段，事件从根元素向子元素传播；在目标阶段，事件在目标元素上触发；在冒泡阶段，事件从子元素向根元素传播。开发者可以通过控制事件传播的阶段来实现不同的交互效果，比如阻止事件传播、实现事件代理等。</p> </div></div><ins class="adsbygoogle adsbygoogle mb-[20px] md:mb-[15px]" style="display:block;" data-ad-client="ca-pub-9777110919590837" data-ad-slot="3142630786" data-ad-format="auto" data-analytics-uacct data-analytics-domain-name data-adsbygoogle-status data-ad-full-width-responsive="false" full-width-responsive="true" data-v-101bfb4a></ins><div class="grid lg:flex lg:justify-between lg:items-center gap-y-5 lg:gap-y-0"><div class="flex justify-end items-center gap-x-1.5"><div class="hs-tooltip inline-block min-w-[30px]"><button type="button" class="hs-tooltip-toggle flex items-center gap-x-2 text-sm text-gray-500 hover:text-gray-800 dark:text-gray-400 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Babylon.js Web3D 项目中优化性能的宝典","P2_HkIhn",{"title":59,"urlName":60},"一站式 Remix 技术干货 | 手把手教你构建企业官网","KFav4Lba","{\n \"@context\": \"https://schema.org\",\n \"@type\": \"NewsArticle\",\n \"image\": [\"https://oss.bolzjb.com/2024/02/17/71d434c995be04a74f65dfe11de6e814.image\"],\n \"headline\": \"事件：网页的灵魂，交互的精髓\",\n \"datePublished\": \"2024-01-27T15:02:06+8:00\",\n \"dateModified\": \"2024-02-24T08:00:07+8:00\",\n \"author\": [{\n \"@type\": \"Person\",\n \"name\": \"Kyle\",\n \"url\": \"https://www.bytezonex.com\"\n }]\n }",{"urlName":63,"title":64,"categoryId":12,"categoryTitle":13,"keywords":65,"description":66,"coverImg":67,"content":68,"createdAt":69,"viewCount":70,"updatedAt":71,"datePublished":72,"dateModified":73},"XRUuaSZt","事件：网页的灵魂，交互的精髓","JS事件, 移动端事件, PC端事件, input事件, select事件, change事件, focus事件, blur事件, DOM事件, 事件委托, 事件冒泡, 事件传播","在网页交互中，事件扮演着至关重要的角色。它将用户操作与网页内容紧密联系，实现动态效果和交互体验。从PC端到移动端，从键盘输入到鼠标点击，事件无所不在。移动端的input事件、聚焦时的focus事件、失去焦点时的blur事件，都为移动端网页带来了原生般的交互体验。本篇文章将深入剖析JS事件，从不同事件类型到事件传播机制，为您揭开事件的神秘面纱。","https://oss.bolzjb.com/2024/02/17/71d434c995be04a74f65dfe11de6e814.image","\u003Cp><#-- 文章标题 -->\u003C/p>\n\u003Cp><#-- SEO关键词 -->\u003C/p>\n\u003Cp><#-- SEO文章 -->\u003C/p>\n\u003Cblockquote>\n\u003Cp>\u003Cstrong>移动端的内容改变事件\u003C/strong>\u003C/p>\n\u003C/blockquote>\n\u003Cp>移动端的虚拟键盘并不能像PC端物理键盘一样监听到键盘的按下和抬起，因此移动端使用了统一的input事件来代替keydown和keyup。当用户在输入框或文本域中输入文字时，input事件就会被触发，使开发者能够及时获取用户输入的内容。\u003C/p>\n\u003Cblockquote>\n\u003Cp>\u003Cstrong>在\u003Cinput>、\u003Ctextarea>里面选中文本时触发\u003C/strong>\u003C/p>\n\u003C/blockquote>\n\u003Cp>select事件在用户在输入框或文本域中选中文本时触发，开发者可以通过监听该事件来实现诸如复制、剪切、粘贴等功能。此外，select事件还可以用来获取用户选中的文本内容，便于进一步处理。\u003C/p>\n\u003Cblockquote>\n\u003Cp>\u003Cstrong>change事件：让数据及时更新\u003C/strong>\u003C/p>\n\u003C/blockquote>\n\u003Cp>change事件在用户操作表单元素（如输入框、单选按钮、复选框）后触发，开发者可以通过监听该事件来实现数据的实时更新，保证表单数据的准确性。\u003C/p>\n\u003Cblockquote>\n\u003Cp>\u003Cstrong>focus事件：聚焦的时刻\u003C/strong>\u003C/p>\n\u003C/blockquote>\n\u003Cp>focus事件在用户将焦点移入某个元素时触发，开发者可以通过监听该事件来实现一些特殊效果，比如改变元素的样式、显示提示信息等。\u003C/p>\n\u003Cblockquote>\n\u003Cp>\u003Cstrong>blur事件：失焦的瞬间\u003C/strong>\u003C/p>\n\u003C/blockquote>\n\u003Cp>blur事件在用户将焦点移出某个元素时触发，开发者可以通过监听该事件来实现一些特殊效果，比如隐藏提示信息、进行表单验证等。\u003C/p>\n\u003Cblockquote>\n\u003Cp>\u003Cstrong>DOM事件：元素互动的大舞台\u003C/strong>\u003C/p>\n\u003C/blockquote>\n\u003Cp>DOM事件是一组与文档对象模型（DOM）相关的事件，当文档中发生某些操作时，这些事件就会被触发，比如鼠标点击、键盘输入、页面加载等。开发者可以通过监听DOM事件来实现各种交互效果，让网页更加生动。\u003C/p>\n\u003Cblockquote>\n\u003Cp>\u003Cstrong>事件委托：提升效率，优化性能\u003C/strong>\u003C/p>\n\u003C/blockquote>\n\u003Cp>事件委托是一种利用事件冒泡机制来优化事件处理的技巧，它将事件监听器绑定到父元素而不是子元素上，当子元素发生事件时，事件会通过冒泡机制传播到父元素，此时父元素上的事件监听器就会被触发。这样做的好处是减少了事件监听器的数量，提高了性能，同时简化了事件处理逻辑。\u003C/p>\n\u003Cblockquote>\n\u003Cp>\u003Cstrong>事件冒泡：事件传播的天然法则\u003C/strong>\u003C/p>\n\u003C/blockquote>\n\u003Cp>事件冒泡是一种事件传播机制，当子元素发生事件时，该事件会逐级向父元素传播，直到到达文档的根元素。在传播过程中，每个元素上的事件监听器都会被触发，开发者可以通过监听事件冒泡来实现一些特殊效果，比如实现点击空白处关闭弹出层的操作。\u003C/p>\n\u003Cblockquote>\n\u003Cp>\u003Cstrong>事件传播：事件传递的艺术\u003C/strong>\u003C/p>\n\u003C/blockquote>\n\u003Cp>事件传播是事件在元素之间传递的过程，它分为捕获阶段、目标阶段和冒泡阶段。在捕获阶段，事件从根元素向子元素传播；在目标阶段，事件在目标元素上触发；在冒泡阶段，事件从子元素向根元素传播。开发者可以通过控制事件传播的阶段来实现不同的交互效果，比如阻止事件传播、实现事件代理等。\u003C/p>\n","2024-01-27 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