JS实现初始化、动态点击切换激活样式

食用须知，不懂得把代码交给AI解释一下，明白流程就会用了，本文只有js与html，样式代码一概没有：

效果展示

在这里插入图片描述

1、点击显示的盒子代码

<div data-v-e1dd37c4="" class="news-container main-width-container clearfix">
    <div data-v-e1dd37c4="" class="title title-dszx"></div>
    <div data-v-e1dd37c4="" class="menu" style="height: 300px">
        <div data-v-e1dd37c4="" class="menu-item" id="jnqsnkjcxdswjtz" onclick="kemu('jnqsnkjcxdswjtz-km')">
        <a data-v-e1dd37c4="" aria-current="page" style="cursor: pointer" class="jnqsnkjcxdswjtz-km km">文件通知</a>
        </div>
        <div data-v-e1dd37c4="" class="menu-item" id="jnqsnkjcxdshdbd" onclick="kemu('jnqsnkjcxdshdbd-km')">
            <a data-v-e1dd37c4=""
               aria-current="page" style="cursor: pointer"
               class="jnqsnkjcxdshdbd-km km">活动报道</a>
        </div>
        <div data-v-e1dd37c4="" class="menu-item" id="jnqsnkjcxdsmdgs" onclick="kemu('jnqsnkjcxdsmdgs-km')">
            <a data-v-e1dd37c4=""
               aria-current="page" style="cursor: pointer"
               class="jnqsnkjcxdsmdgs-km km">名单公示</a>
        </div>
    </div>

2、JS代码

<script type="text/javascript">
        // 在页面加载完成时执行的函数
        var nameValue=null;
        var km = 'jnqsnkjcxdshdbd';
        $(document).ready(function() {
            $('.' + km +'-km').addClass('router-link-exact-active router-link-active')
            $('#jnqsnkjcxdswjtza').hide();
            $('#jnqsnkjcxdshdbda').show();
            $('#jnqsnkjcxdsmdgsa').hide();
            // 调用获取URL参数值的函数并传入参数名
            nameValue = getParameterByName('name');
            // 在控制台输出参数值，以便检查是否成功获取
            console.log("Name parameter value: " + nameValue);
        });

        // 自定义获取URL参数值的函数
        function getParameterByName(name) {
            name = name.replace(/[$  $]/g, "\\$&");
            var regex = new RegExp("[?&]" + name + "(=([^&#]*)|&|#|$)"),
                results = regex.exec(window.location.href);
            if (!results) return null;
            if (!results[2]) return '';
            return decodeURIComponent(results[2].replace(/\+/g, " "));
        }

        var s = 0;
        function kemu(id) {
            // 首先隐藏所有内容区域
            $('#jnqsnkjcxdswjtza').hide();
            $('#jnqsnkjcxdshdbda').hide();
            $('#jnqsnkjcxdsmdgsa').hide();
            // 然后根据被点击的分类ID显示对应的内容区域
            if (id == 'jnqsnkjcxdswjtz-km') {
                $('#jnqsnkjcxdswjtza').show();
            }
            else if (id == 'jnqsnkjcxdshdbd-km') {
                $('#jnqsnkjcxdshdbda').show();
            }
            else if (id == 'jnqsnkjcxdsmdgs-km') {
                $('#jnqsnkjcxdsmdgsa').show();
            }
            console.log(id)

            // 更新选中的分类按钮样式
            $('.km').removeClass('router-link-exact-active router-link-active');
            // 再给当前点击的按钮添加激活样式
            $('.' + id).addClass('router-link-exact-active router-link-active')
        }
    </script>

3、这里是根据上面的点击显示的内容，点击相应的盒子显示相应的内容，里面嵌套了FreeMarker的语法不用在意，理解代码的用法


    
    <div data-v-e1dd37c4="" class="news-list-container">
        <div data-v-3c5e8975="" data-v-926337c4="" id="jnqsnkjcxdswjtza" data-v-e1dd37c4=""
             class="list-container">
            <div data-v-34383868="" data-v-37098de5="" class="card-container">
                [@cms_content_page count='12' orderBy='4' typeId='1,2,3,4' channelId='255'
                channelOption='1'
                dateFormat='yyyy-MM-dd HH:mm:ss']
                <!--dateFormat='yyyy-MM-dd HH-mm']-->
                [#if tag_pagination.list?size > 0]
                [#list tag_pagination.list as a]
                <a data-v-8dd192b6=""
                   data-v-34383868="" href="${a.url}"
                   class="news-list-item" showdate="true" showview="true">

                    <div data-v-8dd192b6="" class="news-title" style="line-height: 1.5;text-align: left;font-size: 22px" style="text-align: left;font-size: 22px">
                        [@text_cut s=a.title len=25  append='...' /]
                    </div>
                    <div data-v-8dd192b6="" class="publish-date" style="line-height: 25px;bottom: 40px">
                        <span data-v-8dd192b6="">${a.date?string(dateFormat)}</span>
                    </div>
                </a>
                [/#list]
                [#else]
                <a data-v-8dd192b6=""
                   data-v-34383868="" href=""
                   class="news-list-item" showdate="true" showview="true">
                    <div data-v-8dd192b6="" class="news-title" style="line-height: 1.5;text-align: left;font-size: 22px" style="text-align: left;font-size: 22px">
                        文件通知暂无数据
                    </div>
                </a>
                [/#if]
            </div>

            <div data-v-37098de5="" class="pagination el-pagination is-background"
                 style="margin-right: 28%">
                <div style="">
                    <!--上下页-->
                    [@cms_pagination sysPage='1'/]
                </div>
                [/@cms_content_page]
            </div>
        </div>
        <div data-v-3c5e8975="" data-v-926337c4="" id="jnqsnkjcxdshdbda" style="display: none" data-v-e1dd37c4=""
             class="list-container">
            <div data-v-34383868="" data-v-37098de5="" class="card-container">
                [@cms_content_page count='12' orderBy='4' typeId='1,2,3,4' channelId='256'
                channelOption='1'
                dateFormat='yyyy-MM-dd HH:mm:ss']
                <!--dateFormat='yyyy-MM-dd HH-mm']-->
                [#if tag_pagination.list?size > 0]
                [#list tag_pagination.list as a]
                <a data-v-8dd192b6=""
                   data-v-34383868="" href="${a.url}"
                   class="news-list-item" showdate="true" showview="true">

                    <div data-v-8dd192b6="" class="news-title" style="line-height: 1.5;text-align: left;font-size: 22px" style="text-align: left;font-size: 22px">
                        [@text_cut s=a.title len=25  append='...' /]
                    </div>
                    <div data-v-8dd192b6="" class="publish-date" style="line-height: 25px;bottom: 40px">
                        <span data-v-8dd192b6="">${a.date?string(dateFormat)}</span>
                    </div>
                </a>
                [/#list]
                [#else]
                <a data-v-8dd192b6=""
                   data-v-34383868="" href=""
                   class="news-list-item" showdate="true" showview="true">
                    <div data-v-8dd192b6="" class="news-title" style="line-height: 1.5;text-align: left;font-size: 22px" style="text-align: left;font-size: 22px">
                        活动报道暂无数据
                    </div>
                </a>
                [/#if]
            </div>

            <div data-v-37098de5="" class="pagination el-pagination is-background"
                 style="margin-right: 28%">
                <div style="">
                    <!--上下页-->
                    [@cms_pagination sysPage='1'/]
                </div>
                [/@cms_content_page]
            </div>
        </div>
        <div data-v-3c5e8975="" data-v-926337c4="" id="jnqsnkjcxdsmdgsa" style="display: none" data-v-e1dd37c4=""
             class="list-container">
            <div data-v-34383868="" data-v-37098de5="" class="card-container">
                [@cms_content_page count='12' orderBy='4' typeId='1,2,3,4' channelId='257'
                channelOption='1'
                dateFormat='yyyy-MM-dd HH:mm:ss']
                <!--dateFormat='yyyy-MM-dd HH-mm']-->
                [#if tag_pagination.list?size > 0]
                [#list tag_pagination.list as a]
                <a data-v-8dd192b6=""
                   data-v-34383868="" href="${a.url}"
                   class="news-list-item" showdate="true" showview="true">

                    <div data-v-8dd192b6="" class="news-title" style="line-height: 1.5;text-align: left;font-size: 22px" style="text-align: left;font-size: 22px">
                        [@text_cut s=a.title len=25  append='...' /]
                    </div>
                    <div data-v-8dd192b6="" class="publish-date" style="line-height: 25px;bottom: 40px">
                        <span data-v-8dd192b6="">${a.date?string(dateFormat)}</span>
                    </div>
                </a>
                [/#list]
                [#else]
                <a data-v-8dd192b6=""
                   data-v-34383868="" href=""
                   class="news-list-item" showdate="true" showview="true">
                    <div data-v-8dd192b6="" class="news-title" style="line-height: 1.5;text-align: left;font-size: 22px" style="text-align: left;font-size: 22px">
                        名单公示暂无数据
                    </div>
                </a>
                [/#if]
            </div>

            <div data-v-37098de5="" class="pagination el-pagination is-background"
                 style="margin-right: 28%">
                <div style="">
                    <!--上下页-->
                    [@cms_pagination sysPage='1'/]
                </div>
                [/@cms_content_page]
            </div>
        </div>
    </div>
</div>