<p[]用实现可搜索的下拉框</p>

开发时经常遇到选择项极多的下拉列表，挑选时相当不便，今日也碰上类似状况，遍寻网络资料与插件，最终找到一款操作简便的输入式下拉组件，这就是本文要介绍的对象

话不多说直接上代码

<p style='margin-bottom:15px;color:#555555;font-size:15px;line-height:200%;text-indent:2em;'> <pre><code class="prism language-html"><span class="token comment"></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>link</span> <span class="token attr-name">href</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>这个网址指向一个资源文件，包含了名为select2的库的样式表，版本是4.0.8，这个资源文件是一个CSS文件，用于定制下拉选择框的外观和功能，可以通过网络链接获取并使用<span class="token punctuation">"</span></span> <span class="token attr-name">rel</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>stylesheet<span class="token punctuation">"</span></span> <span class="token punctuation">/></span></span> <span class="token comment"></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>script</span> <span class="token attr-name">src</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>这个网址指向百度提供的jQuery库文件，版本是2.0.0，文件类型为压缩后的JavaScript代码，文件名包含了版本号后缀min，表明它是一个精简压缩版的库文件。<span class="token punctuation">"</span></span><span class="token punctuation">></span></span><span class="token script language-javascript"></span><span class="token tag"><span class="token tag"><span class="token punctuation"></</span>script</span><span class="token punctuation">></span></span> <span class="token comment"></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>script</span> <span class="token attr-name">src</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>这个网址指向一个资源文件，它包含了select2的版本4.0.8的JavaScript代码，用户可以通过这个链接获取并使用该库。<span class="token punctuation">"</span></span><span class="token punctuation">></span></span><span class="token script language-javascript"></span><span class="token tag"><span class="token tag"><span class="token punctuation"></</span>script</span><span class="token punctuation">></span></span> </code></pre></p>

这段代码是核心所在，当我们加载了css和js之后，就能轻松地运用这个插件了，这里要特别留意的是，在加载js文件时，必须先加载普通版本，再加载带.min后缀的版本，否则会出现错误提示，这是由于该插件是依托某个框架进行封装的。

<p style='margin-bottom:15px;color:#555555;font-size:15px;line-height:200%;text-indent:2em;'> <pre><code class="prism language-javascript"><span class="token operator"><</span>script<span class="token operator">></span> <span class="token function">$</span><span class="token punctuation">(</span><span class="token keyword">function</span> <span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">{</span> <span class="token function">$</span><span class="token punctuation">(</span><span class="token string">"#my-select"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">select2</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token punctuation">}</span><span class="token punctuation">)</span> <span class="token operator"><</span><span class="token operator">/</span>script<span class="token operator">></span> </code></pre></p>

在页面部署时，仅需给目标搜索下拉框的标签元素赋予一个id标识，随后在脚本代码里完成该元素的初始化配置即可。

如下是完整代码

<p style='margin-bottom:15px;color:#555555;font-size:15px;line-height:200%;text-indent:2em;'> <pre><code class="prism language-html"><span class="token tag"><span class="token tag"><span class="token punctuation"><</span>html</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>head</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>title</span><span class="token punctuation">></span></span>select2<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>title</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>link</span> <span class="token attr-name">href</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>https://cdnjs.cloudflare.com/ajax/libs/select2/4.0.8/css/select2.min.css<span class="token punctuation">"</span></span> <span class="token attr-name">rel</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>stylesheet<span class="token punctuation">"</span></span> <span class="token punctuation">/></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>style</span><span class="token punctuation">></span></span><span class="token style language-css"> <span class="token selector">body</span> <span class="token punctuation">{</span>

<span class="token property">display</span><span class="token punctuation">:</span> flex<span class="token punctuation">;</span> <span class="token property">align-items</span><span class="token punctuation">:</span> center<span class="token punctuation">;</span> <span class="token property">justify-content</span><span class="token punctuation">:</span> center<span class="token punctuation">;</span> <span class="token punctuation">}</span> <span class="token selector">#my-select</span> <span class="token punctuation">{</span> <span class="token property">width</span><span class="token punctuation">:</span>190px<span class="token punctuation">;</span> <span class="token punctuation">}</span> </span><span class="token tag"><span class="token tag"><span class="token punctuation"></</span>style</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"></</span>head</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>body</span><span class="token punctuation">></span></span> 请选择省份： <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>select</span> <span class="token attr-name">id</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>my-select<span class="token punctuation">"</span></span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>option</span><span class="token punctuation">></span></span>请选择<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>option</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>option</span><span class="token punctuation">></span></span>陕西省<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>option</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>option</span><span class="token punctuation">></span></span>云南省<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>option</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>option</span><span class="token punctuation">></span></span>甘肃省<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>option</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>option</span><span class="token punctuation">></span></span>浙江省<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>option</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"></</span>select</span><span class="token punctuation">></span></span> <span class="token comment"></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>script</span> <span class="token attr-name">src</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>http://libs.baidu.com/jquery/2.0.0/jquery.min.js<span class="token punctuation">"</span></span><span class="token punctuation">></span></span><span class="token script language-javascript"></span><span class="token tag"><span class="token tag"><span class="token punctuation"></</span>script</span><span class="token punctuation">></span></span> <span class="token comment"></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>script</span> <span class="token attr-name">src</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>https://cdnjs.cloudflare.com/ajax/libs/select2/4.0.8/js/select2.min.js<span class="token punctuation">"</span></span><span class="token punctuation">></span></span><span class="token script language-javascript"></span><span class="token tag"><span class="token tag"><span class="token punctuation"></</span>script</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>script</span><span class="token punctuation">></span></span><span class="token script language-javascript"> <span class="token function">$</span><span class="token punctuation">(</span><span class="token keyword">function</span> <span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">{</span> <span class="token function">$</span><span class="token punctuation">(</span><span class="token string">"#my-select"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">select2</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token punctuation">}</span><span class="token punctuation">)</span> </span><span class="token tag"><span class="token tag"><span class="token punctuation"></</span>script</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"></</span>body</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"></</span>html</span><span class="token punctuation">></span></span> </code></pre></p>

如有什么错误之处，请各位看官多多指出，共同进步！

# 陕西省  # 请各位  # 当我们  # 这段  # 浙江省  # 它是  # 之处  # 如有  # 这就是  # 就能  # 下拉框  # 用select2实现可搜索下拉框  # 云南省  # 这是  # 是一个  # 甘肃省  # 的是  # 包含了  # 请选择  # 加载  # 可以通过  # 开发难题与解决之道 

相关文章： seo需要买什么，seo需要考虑什么 ,和利时k-ai01-e  人教版四年级数学上册期末试卷哪里找？这份超详下载指南与复习攻略请收好  WordPress创建账户，一直提示“请重试”？教你如何轻松解决！  三八节抖音成女性魅力舞台！职场精英自信讲述奋斗故事   seo是以什么为导向，何为seo ,ai随意排布  免费下载mp3歌曲软件全免费：手机mp3音乐下载工具推荐哪个更靠谱？  百度关键词下拉框怎么刷？关键字指数与相关度你了解多少？   新课标英语词汇3500+1000+500怎么背更高效？这3个记忆法90%考生不知道！  SEO领站：如何通过SEO优化提升网站排名与流量  SEO网站外贸：助力企业拓展国际市场的关键  seo管理系统是什么，seo网站管理 ,比较不错的ai写作软件  为什么要seo 运营，为什么需要seo ,抖音ai视频怎么做  SEO怎么排名？这5大技巧，轻松提升网站排名  初三英语听力_中考听力训练有哪些高效方法？  四年级数学上册口算总超时？这500道可打印题库每天练10分钟，正确率提升50%！  鸿蒙电脑版微信6月6日晚开启内测邀请，荣耀靠自己能否翻身？   seo是什么职业 学院，seo专业学校 ,初中化学ai是什么意思  iPhone11 pro max微信分身版下载安装教程，立即下载   WordPress调用外部接口获取数据：提升网站功能的完美解决方案  初一英语填空题技巧如何快速掌握？_语法填空解题技巧怎样在7天内突破？  专业SEO网站优化与推广，提升网站排名与流量的核心策略  seo有什么核心技术，seo有什么核心技术吗 ,ps ai汉服  初一英语上册译林版电子课本怎么找？_初一英语上册译林版电子课本有哪些学习价值？  SEO网站内部优化方案-提升搜索引擎排名的关键步骤  企业服务关键词：提升企业竞争力的关键所在  WordPress插件破解教程-轻松实现功能扩展，提升网站效率  seo竞价做的什么工作，seo 竞价 ,最强ai pc  “ChatGPT无法使用”？破解限制，带你走进全新人工智能时代！  SEO运营工作是什么，seo公司运营 ,百威高阶红星ai  自媒体人素材需求大揭秘！图文易找视频难，版权成关键？   女生主动加微信背后的多重意涵及应对策略解析   什么是公众号AIP？揭秘公众号智能化的新时代  中消协发布消费提示：惕免密支付风险，网购谨慎开启   为啥访问不了ChatGPT？解决方法全解析！  免费SEO助手，让网站推广更强！  企业官网SEO优化：提升品牌曝光，打造网络竞争力  为什么Bing搜索常常搜不到你想要的东西？看看这些你可能不知道的原因  外研版初中英语电子课本高清PDF版下载攻略：七年级下册2026春最新版获取指南  国际禁毒蓝皮书发布：互联网+支付+物流成毒品犯罪新方式？   零跑去年海外销量6.7万辆？揭秘背后的增长策略与合作模式  2月23日网商银行安全检验技术与系统入选国家级项目，有何亮点？   如何下载人教版初中英语点读软件电脑版？电脑版人教版英语点读软件安装步骤是什么？人教版初中英语点读软件电脑版下载  免费SEO快速收录工具，助力网站秒上首页！  小学生语文试卷模板该怎么选？_部编版小学语文综合测试卷范例有哪些题型？  什么叫全网资源曝光？让你的品牌一夜成名的秘密武器！  seo是什么激素，seo具体是什么 ,ai老黄牛  中文段落AI分析：智能化文本处理的新突破  SEO软件联盟-助力网站流量爆发的最佳利器  手机如何进入抖音网页版？入口位置及|直播|开启方法介绍   百度推荐怎么推广？常见的这几种推广方法你知道吗？  

相关栏目： 【 网络营销44070 】 【 网络推广122852 】 【 网络优化116010 】 【 网址导航102054 】 【 网络技术82194 】 【 网络资讯43554 】