• ElementUI浅尝辄止28：Dropdown 下拉菜单

    将动作或菜单折叠到下拉菜单中。

    1.如何使用？

    移动到下拉菜单上，展开更多操作。

    1. //通过组件slot来设置下拉触发的元素以及需要通过具名slot为dropdown 来设置下拉菜单。默认情况下，下拉按钮只要hover即可，无需点击也会显示下拉菜单。
    2.  
    4.   <span class="el-dropdown-link">
    5.     下拉菜单<i class="el-icon-arrow-down el-icon--right">i>
    6.   span>
    7.   <el-dropdown-menu slot="dropdown">
    8.     <el-dropdown-item>黄金糕el-dropdown-item>
    9.     <el-dropdown-item>狮子头el-dropdown-item>
    10.     <el-dropdown-item>螺蛳粉el-dropdown-item>
    11.     <el-dropdown-item disabled>双皮奶el-dropdown-item>
    12.     <el-dropdown-item divided>蚵仔煎el-dropdown-item>
    13.   el-dropdown-menu>
    15.  
    16. <style>
    17.   .el-dropdown-link {
    18.     cursor: pointer;
    19.     color: #409EFF;
    20.   }
    21.   .el-icon-arrow-down {
    22.     font-size: 12px;
    23.   }
    24. style>

    2.触发对象

    可使用按钮触发下拉菜单。

    1. //设置split-button属性来让触发下拉元素呈现为按钮组，左边是功能按钮，右边是触发下拉菜单的按钮，设置为true即可。
    2.  
    4.   <el-button type="primary">
    5.     更多菜单<i class="el-icon-arrow-down el-icon--right">i>
    6.   el-button>
    7.   <el-dropdown-menu slot="dropdown">
    8.     <el-dropdown-item>黄金糕el-dropdown-item>
    9.     <el-dropdown-item>狮子头el-dropdown-item>
    10.     <el-dropdown-item>螺蛳粉el-dropdown-item>
    11.     <el-dropdown-item>双皮奶el-dropdown-item>
    12.     <el-dropdown-item>蚵仔煎el-dropdown-item>
    13.   el-dropdown-menu>
    15. <el-dropdown split-button type="primary" @click="handleClick">
    16.   更多菜单
    17.   <el-dropdown-menu slot="dropdown">
    18.     <el-dropdown-item>黄金糕el-dropdown-item>
    19.     <el-dropdown-item>狮子头el-dropdown-item>
    20.     <el-dropdown-item>螺蛳粉el-dropdown-item>
    21.     <el-dropdown-item>双皮奶el-dropdown-item>
    22.     <el-dropdown-item>蚵仔煎el-dropdown-item>
    23.   el-dropdown-menu>
    24. el-dropdown>
    25.  
    26. <style>
    27.   .el-dropdown {
    28.     vertical-align: top;
    29.   }
    30.   .el-dropdown + .el-dropdown {
    31.     margin-left: 15px;
    32.   }
    33.   .el-icon-arrow-down {
    34.     font-size: 12px;
    35.   }
    36. style>
    37.  
    38. <script>
    39.   export default {
    40.     methods: {
    41.       handleClick() {
    42.         alert('button click');
    43.       }
    44.     }
    45.   }
    46. script>

    3.触发方式

    可以配置 click 激活或者 hover 激活。

    1. 在trigger属性设置为click即可。
    2.  
    3. class="block-col-2">
    4.   <el-col :span="12">
    5.     <span class="demonstration">hover 激活span>
    6.     <el-dropdown>
    7.       <span class="el-dropdown-link">
    8.         下拉菜单<i class="el-icon-arrow-down el-icon--right">i>
    9.       span>
    10.       <el-dropdown-menu slot="dropdown">
    11.         <el-dropdown-item icon="el-icon-plus">黄金糕el-dropdown-item>
    12.         <el-dropdown-item icon="el-icon-circle-plus">狮子头el-dropdown-item>
    13.         <el-dropdown-item icon="el-icon-circle-plus-outline">螺蛳粉el-dropdown-item>
    14.         <el-dropdown-item icon="el-icon-check">双皮奶el-dropdown-item>
    15.         <el-dropdown-item icon="el-icon-circle-check">蚵仔煎el-dropdown-item>
    16.       el-dropdown-menu>
    17.     el-dropdown>
    18.   el-col>
    19.   <el-col :span="12">
    20.     <span class="demonstration">click 激活span>
    21.     <el-dropdown trigger="click">
    22.       <span class="el-dropdown-link">
    23.         下拉菜单<i class="el-icon-arrow-down el-icon--right">i>
    24.       span>
    25.       <el-dropdown-menu slot="dropdown">
    26.         <el-dropdown-item icon="el-icon-plus">黄金糕el-dropdown-item>
    27.         <el-dropdown-item icon="el-icon-circle-plus">狮子头el-dropdown-item>
    28.         <el-dropdown-item icon="el-icon-circle-plus-outline">螺蛳粉el-dropdown-item>
    29.         <el-dropdown-item icon="el-icon-check">双皮奶el-dropdown-item>
    30.         <el-dropdown-item icon="el-icon-circle-check">蚵仔煎el-dropdown-item>
    31.       el-dropdown-menu>
    32.     el-dropdown>
    33.   el-col>
    35.  
    36. <style>
    37.   .el-dropdown-link {
    38.     cursor: pointer;
    39.     color: #409EFF;
    40.   }
    41.   .el-icon-arrow-down {
    42.     font-size: 12px;
    43.   }
    44.   .demonstration {
    45.     display: block;
    46.     color: #8492a6;
    47.     font-size: 14px;
    48.     margin-bottom: 20px;
    49.   }
    50. style>

    4.菜单隐藏方式

    可以hide-on-click属性来配置。

    1. //下拉菜单默认在点击菜单项后会被隐藏，将hide-on-click属性默认为false可以关闭此功能。
    2.  
    3. "false">
    4.   <span class="el-dropdown-link">
    5.     下拉菜单<i class="el-icon-arrow-down el-icon--right">i>
    6.   span>
    7.   <el-dropdown-menu slot="dropdown">
    8.     <el-dropdown-item>黄金糕el-dropdown-item>
    9.     <el-dropdown-item>狮子头el-dropdown-item>
    10.     <el-dropdown-item>螺蛳粉el-dropdown-item>
    11.     <el-dropdown-item disabled>双皮奶el-dropdown-item>
    12.     <el-dropdown-item divided>蚵仔煎el-dropdown-item>
    13.   el-dropdown-menu>
    15.  
    16. <style>
    17.   .el-dropdown-link {
    18.     cursor: pointer;
    19.     color: #409EFF;
    20.   }
    21.   .el-icon-arrow-down {
    22.     font-size: 12px;
    23.   }
    24. style>

    5.指令事件

    点击菜单项后会触发事件，用户可以通过相应的菜单项 key 进行不同的操作

    1. "handleCommand">
    2.   <span class="el-dropdown-link">
    3.     下拉菜单<i class="el-icon-arrow-down el-icon--right">i>
    4.   span>
    5.   <el-dropdown-menu slot="dropdown">
    6.     <el-dropdown-item command="a">黄金糕el-dropdown-item>
    7.     <el-dropdown-item command="b">狮子头el-dropdown-item>
    8.     <el-dropdown-item command="c">螺蛳粉el-dropdown-item>
    9.     <el-dropdown-item command="d" disabled>双皮奶el-dropdown-item>
    10.     <el-dropdown-item command="e" divided>蚵仔煎el-dropdown-item>
    11.   el-dropdown-menu>
    13.  
    14. <style>
    15.   .el-dropdown-link {
    16.     cursor: pointer;
    17.     color: #409EFF;
    18.   }
    19.   .el-icon-arrow-down {
    20.     font-size: 12px;
    21.   }
    22. style>
    23.  
    24. <script>
    25.   export default {
    26.     methods: {
    27.       handleCommand(command) {
    28.         this.$message('click on item ' + command);
    29.       }
    30.     }
    31.   }
    32. script>

    6. 不同尺寸

    Dropdown 组件提供除了默认值以外的三种尺寸，可以在不同场景下选择合适的尺寸。

    1. //额外的尺寸：medium、small、mini，通过设置size属性来配置它们。
    2.  
    3. "primary">
    4.   默认尺寸
    5.   "dropdown">
    6.     <el-dropdown-item>黄金糕el-dropdown-item>
    7.     <el-dropdown-item>狮子头el-dropdown-item>
    8.     <el-dropdown-item>螺蛳粉el-dropdown-item>
    9.     <el-dropdown-item>双皮奶el-dropdown-item>
    10.     <el-dropdown-item>蚵仔煎el-dropdown-item>
    11.   
    13.  
    14. <el-dropdown size="medium" split-button type="primary">
    15.   中等尺寸
    16.   <el-dropdown-menu slot="dropdown">
    17.     <el-dropdown-item>黄金糕el-dropdown-item>
    18.     <el-dropdown-item>狮子头el-dropdown-item>
    19.     <el-dropdown-item>螺蛳粉el-dropdown-item>
    20.     <el-dropdown-item>双皮奶el-dropdown-item>
    21.     <el-dropdown-item>蚵仔煎el-dropdown-item>
    22.   el-dropdown-menu>
    23. el-dropdown>
    24.  
    25. <el-dropdown size="small" split-button type="primary">
    26.   小型尺寸
    27.   <el-dropdown-menu slot="dropdown">
    28.     <el-dropdown-item>黄金糕el-dropdown-item>
    29.     <el-dropdown-item>狮子头el-dropdown-item>
    30.     <el-dropdown-item>螺蛳粉el-dropdown-item>
    31.     <el-dropdown-item>双皮奶el-dropdown-item>
    32.     <el-dropdown-item>蚵仔煎el-dropdown-item>
    33.   el-dropdown-menu>
    34. el-dropdown>
    35.  
    36. <el-dropdown size="mini" split-button type="primary">
    37.   超小尺寸
    38.   <el-dropdown-menu slot="dropdown">
    39.     <el-dropdown-item>黄金糕el-dropdown-item>
    40.     <el-dropdown-item>狮子头el-dropdown-item>
    41.     <el-dropdown-item>螺蛳粉el-dropdown-item>
    42.     <el-dropdown-item>双皮奶el-dropdown-item>
    43.     <el-dropdown-item>蚵仔煎el-dropdown-item>
    44.   el-dropdown-menu>
    45. el-dropdown>

     

  • 相关阅读:
    ABAP调用Https接口 Ssl证书导入
    在Winform分页控件中集成保存用户列表显示字段及宽度调整设置
    JS判断类型（typeof+constructor+toString）
    3、在 CentOS 8 系统上安装 PostgreSQL 15.4
    【DataHub】LinkedIn DataHub学习笔记
    JavaScript基础（1）
    MQTT协议
    Spring：Bean生命周期
    Spring Boot 2.7.6 正式版发布, SpringBoot 2.7.6来了
    亚稳态介绍、危害及如何避免亚稳态
  • 原文地址：https://blog.csdn.net/W2457307263/article/details/132701573