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HTML 

              
                <div id="app" class="shadow">
  <h1 style="text-align:center;">
    <a href="https://github.com/TerryZ/v-selectmenu" target="_blank">v-selectmenu</a>
  </h1>
  <p style="text-align:center;">SelectMenu for Vue2</p><br>
  
  <h2>Basic</h2>
  <h5 class="mt-3">Disabled</h5>
  <p>
    <button class="btn btn-danger mr-3" @click="available = !available">Toggle available(v-if)</button>
    <button class="btn btn-outline-secondary" @click="disabled = !disabled">Toggle disabled</button>
  </p>
  <p>
    <v-selectmenu :data="listData"
                  :disabled="disabled"
                  @values="values"
                  v-if="available">
    </v-selectmenu>
  </p>
  <div class="bg-light mb-3 p-3">
    <div v-for="log in logs" :key="log.id">
      <div v-text="JSON.stringify(log)"></div>
    </div>
  </div>

  <h5 class="mt-5">Menu display direction</h5>
  <div class="row">
    <div class="col-md-4">
      <v-selectmenu :data="menu" type="regular" align="left" >
        <button type="button" class="btn btn-secondary">Align left</button>
      </v-selectmenu>
    </div>
    <div class="col-md-4">
      <v-selectmenu :data="menu" type="regular" align="center" >
        <button type="button" class="btn btn-secondary">Align center</button>
      </v-selectmenu>
    </div>
    <div class="col-md-4">
      <v-selectmenu :data="menu" type="regular" align="right" >
        <button type="button" class="btn btn-secondary">Align right</button>
      </v-selectmenu>
    </div>
  </div>

  <h5 class="mt-5">Embedded menu</h5>
  <div class="row">
    <div class="col-md-6">
      <p>Regular menu with slot</p>
      <p>
        <button type="button" class="btn btn-secondary mr-3" @click="changeData">Menu with header</button>
        <button type="button" class="btn btn-secondary" @click="toMultipleLevel">Multiple level</button>
      </p>
      <v-selectmenu :data="dynamic" type="regular" :embed="true" >
        <!-- use slot to custom rendering menu row -->
        <template #row="{ row }">
          <span>
            <span v-if="row.icon">(icon: {{row.icon}})</span>
            <span v-html="row.content"></span>
          </span>
        </template>
      </v-selectmenu>
    </div>
    <div class="col-md-6">
      <p>Advanced menu with slot and custom width</p>
      <v-selectmenu :data="groupData"
                    :embed="true"
                    :multiple="true"
                    :width="250"
                    key-field="id"
                    v-model="value2" >
        <template #row="{ row }">
          {{row.name}} {{row.desc}}
        </template>
      </v-selectmenu>
    </div>
  </div>

  <h5 class="mt-5">Custom dropdown container width</h5>
  <p>
    <v-selectmenu :data="groupData" :width="300" >
    </v-selectmenu>
  </p>

  <h5 class="mt-5">Mouse right click to call the menu</h5>
  <v-selectmenu :data="menu" type="regular" :full-width="true" :right-click="true" >
    <div class="jumbotron text-center" style="margin: 0;">
      <h1><i class="fa fa-fw fa-mouse-pointer"></i> mouse right click to call</h1>
    </div>
  </v-selectmenu>

  <h2 class="mt-5">Regular</h2>
  <h5 class="mt-3">Regular menu</h5>
  <p>
    <v-selectmenu :data="menu"
                  type="regular"
                  @show="showLog"
                  @hide="hideLog" >
      <!-- use slot to custom rendering menu row -->
      <template #row="{ row }">
        <span>
          <fa-icon class="fa-lg mr-2" :icon="row.icon.split(',')" v-if="row.icon"></fa-icon>
          <span v-html="row.content"></span>
        </span>
      </template>
    </v-selectmenu>
  </p>

  <h5 class="mt-5">Regular menu with header bar</h5>
  <p>
    <v-selectmenu :data="menu"
                  type="regular"
                  title="Menu with header">
    </v-selectmenu>
  </p>

  <h5 class="mt-5">Regular menu with group</h5>
  <p>
    <v-selectmenu :data="groupMenu" type="regular"  ></v-selectmenu>
  </p>

  <h5 class="mt-5">Regular menu with multiple level</h5>
  <p>
    <v-selectmenu :data="multiLevel" type="regular" >
      <template v-slot="{ show, disabled }">
        <button type="button" class="btn btn-primary">
          SelectMenu (show: <b v-text="show"></b>, disabled: <b v-text="disabled"></b>)
        </button>
      </template>
    </v-selectmenu>
  </p>

  <h2 class="mt-5">Advanced</h2>
  <h5 class="mt-3">Advanced menu</h5>
  <pre class="p-4 bg-light">{{JSON.stringify(value1, null, 4)}}</pre>
  <p>
    <v-selectmenu :data="listData" v-model="value1">
    </v-selectmenu>
  </p>

  <h5 class="mt-5">Advanced menu with slot</h5>
  <p>
    <v-selectmenu :data="listData"
                  :max-selected="3"
                  :multiple="true">
      <template #row="{ row }">
        <div v-html="`${row.name} (${row.desc})`"></div>
      </template>
    </v-selectmenu>
  </p>

  <h5 class="mt-5">Advanced menu with group type</h5>
  <pre class="p-4 bg-light">{{JSON.stringify(value2, null, 4)}}</pre>
  <p>
    <v-selectmenu :data="groupData"
                  :max-selected="3"
                  :multiple="true"
                  key-field="id"
                  v-model="value2" >
    </v-selectmenu>
  </p>
</div>
!

CSS 

              
                html,body{
  background-color:#f5f5f5;
}
#app{
  padding: 30px;
  padding-bottom: 500px;
  width: 900px;
  margin: 0 auto;
  background-color: white;
}
!

JS 

              
                Vue.use(vSelectMenu.default, {
  language: 'en'
})

new Vue({
  el: '#app',
  data () {
    return {
      value1: '7',
      value2: '3,5,17',
      dynamic: [],
      logs: [],
      disabled: false,
      available: true,
      groupData: [{
        title: 'East',
        list: [
          { id: 1, name: 'Chicago Bulls', desc: '芝加哥公牛', abbr: 'CHI' },
          { id: 2, name: 'Cleveland Cavaliers', desc: '克里夫兰骑士', abbr: 'CLE' },
          { id: 3, name: 'Detroit Pistons', desc: '底特律活塞', abbr: 'DET' },
          { id: 4, name: 'Indiana Pacers', desc: '印第安纳步行者', abbr: 'IND' },
          { id: 5, name: 'Milwaukee Bucks', desc: '密尔沃基雄鹿', abbr: 'MIL' },
          { id: 6, name: 'Brooklyn Nets', desc: '布鲁克林篮网', abbr: 'BKN' },
          { id: 7, name: 'Boston Celtics', desc: '波士顿凯尔特人', abbr: 'BOS' },
          { id: 8, name: 'New York Knicks', desc: '纽约尼克斯', abbr: 'NYK' },
          { id: 9, name: 'Philadelphia 76ers', desc: '费城76人', abbr: 'PHI' },
          { id: 10, name: 'Toronto Raptors', desc: '多伦多猛龙', abbr: 'TOR' },
          { id: 11, name: 'Atlanta Hawks', desc: '亚特兰大老鹰', abbr: 'ATL' },
          { id: 12, name: 'Charlotte Hornets', desc: '夏洛特黄蜂', abbr: 'CHA' },
          { id: 13, name: 'Miami Heat', desc: '迈阿密热火', abbr: 'MIA' },
          { id: 14, name: 'Orlando Magic', desc: '奥兰多魔术', abbr: 'ORL' },
          { id: 15, name: 'Washington Wizards', desc: '华盛顿奇才', abbr: 'WAS' }
        ]
      }, {
        title: 'West',
        list: [
          { id: 16, name: 'Denver Nuggets', desc: '丹佛掘金', abbr: 'DEN' },
          { id: 17, name: 'Minnesota Timberwolves', desc: '明尼苏达森林狼', abbr: 'MIN' },
          { id: 18, name: 'Oklahoma City Thunder', desc: '俄克拉荷马雷霆', abbr: 'OKC' },
          { id: 19, name: 'Portland Trail Blazers', desc: '波特兰开拓者', abbr: 'POR' },
          { id: 20, name: 'Utah Jazz', desc: '犹他爵士', abbr: 'UTA' },
          { id: 21, name: 'Golden State Warriors', desc: '金州勇士', abbr: 'GSW' },
          { id: 22, name: 'Los Angeles Clippers', desc: '洛杉矶快船', abbr: 'LAC' },
          { id: 23, name: 'Los Angeles Lakers', desc: '洛杉矶湖人', abbr: 'LAL' },
          { id: 24, name: 'Phoenix Suns', desc: '菲尼克斯太阳', abbr: 'PHX' },
          { id: 25, name: 'Sacramento Kings', desc: '萨克拉门托国王', abbr: 'SAC' },
          { id: 26, name: 'Dallas Mavericks', desc: '达拉斯小牛', abbr: 'DAL' },
          { id: 27, name: 'Houston Rockets', desc: '休斯顿火箭', abbr: 'HOU' },
          { id: 28, name: 'Memphis Grizzlies', desc: '孟菲斯灰熊', abbr: 'MEM' },
          { id: 29, name: 'New Orleans Pelicans', desc: '新奥尔良鹈鹕', abbr: 'NOP' },
          { id: 30, name: 'San Antonio Spurs', desc: '圣安东尼奥马刺', abbr: 'SAS' }
        ] }
      ],
      listData: [
        { id: 1, name: 'Chicago Bulls', desc: '芝加哥公牛' },
        { id: 2, name: 'Cleveland Cavaliers', desc: '克里夫兰骑士' },
        { id: 3, name: 'Detroit Pistons', desc: '底特律活塞' },
        { id: 4, name: 'Indiana Pacers', desc: '印第安纳步行者' },
        { id: 5, name: 'Milwaukee Bucks', desc: '密尔沃基雄鹿' },
        { id: 6, name: 'Brooklyn Nets', desc: '布鲁克林篮网' },
        { id: 7, name: 'Boston Celtics', desc: '波士顿凯尔特人' },
        { id: 8, name: 'New York Knicks', desc: '纽约尼克斯' },
        { id: 9, name: 'Philadelphia 76ers', desc: '费城76人' },
        { id: 10, name: 'Toronto Raptors', desc: '多伦多猛龙' },
        { id: 11, name: 'Atlanta Hawks', desc: '亚特兰大老鹰' },
        { id: 12, name: 'Charlotte Hornets', desc: '夏洛特黄蜂' },
        { id: 13, name: 'Miami Heat', desc: '迈阿密热火' },
        { id: 14, name: 'Orlando Magic', desc: '奥兰多魔术' },
        { id: 15, name: 'Washington Wizards', desc: '华盛顿奇才' },
        { id: 16, name: 'Denver Nuggets', desc: '丹佛掘金' },
        { id: 17, name: 'Minnesota Timberwolves', desc: '明尼苏达森林狼' },
        { id: 18, name: 'Oklahoma City Thunder', desc: '俄克拉荷马雷霆' },
        { id: 19, name: 'Portland Trail Blazers', desc: '波特兰开拓者' },
        { id: 20, name: 'Utah Jazz', desc: '犹他爵士' },
        { id: 21, name: 'Golden State Warriors', desc: '金州勇士' },
        { id: 22, name: 'Los Angeles Clippers', desc: '洛杉矶快船' },
        { id: 23, name: 'Los Angeles Lakers', desc: '洛杉矶湖人' },
        { id: 24, name: 'Phoenix Suns', desc: '菲尼克斯太阳' },
        { id: 25, name: 'Sacramento Kings', desc: '萨克拉门托国王' },
        { id: 26, name: 'Dallas Mavericks', desc: '达拉斯小牛' },
        { id: 27, name: 'Houston Rockets', desc: '休斯顿火箭' },
        { id: 28, name: 'Memphis Grizzlies', desc: '孟菲斯灰熊' },
        { id: 29, name: 'New Orleans Pelicans', desc: '新奥尔良鹈鹕' },
        { id: 30, name: 'San Antonio Spurs', desc: '圣安东尼奥马刺' }
      ],
      menu: [
        { content: '163 NetEase', url: 'http://www.163.com' },
        { content: 'Sina', url: 'http://www.sina.com' },
        { content: 'sm-divider' },
        { content: 'GitHub', icon: 'fab,github', url: 'https://github.com' },
        { content: 'Reddit', icon: 'fab,reddit', url: 'https://www.reddit.com' },
        { content: 'Facebook', icon: 'fab,facebook', url: 'https://www.facebook.com', disabled: true },
        { content: 'Twitter', icon: 'fab,twitter', url: 'https://twitter.com', disabled: true },
        { content: 'sm-divider' },
        { content: 'Click this menu item to trigger your callback', callback: this.doSome }
      ],
      headerMenu: [
        { content: 'News Site', header: true },
        { content: '163 NetEase', url: 'http://www.163.com' },
        { content: 'Sina', url: 'http://www.sina.com' },
        { content: 'sm-divider' },
        { content: 'Technology Site', header: true },
        { content: 'GitHub', icon: 'fab,github', url: 'https://github.com' },
        { content: 'Reddit', icon: 'fab,reddit', url: 'https://www.reddit.com' },
        { content: 'Facebook', icon: 'fab,facebook', url: 'https://www.facebook.com', disabled: true },
        { content: 'Twitter', icon: 'fab,twitter', url: 'https://twitter.com', disabled: true },
        { content: 'sm-divider' },
        { content: 'Actions', header: true },
        { content: 'Click this menu item to trigger your callback', callback: this.doSome }
      ],
      multiLevel: [
        { content: 'Sports news website',
          icon: 'fab,github',
          children: [
            { content: 'Fivb', url: 'http://www.fivb.com/' },
            { content: 'Fifa', url: 'http://www.fifa.com/' },
            { content: 'NBA',
              children: [
                { content: 'NBA official site', url: 'http://www.nba.com' },
                { content: 'Chicago Bulls', icon: 'fab,github', url: 'http://www.nba.com/bulls/' },
                { content: 'Los Angeles Lakers',
                  children: [
                    { content: 'NBA official site', url: 'http://www.nba.com' },
                    { content: 'Chicago Bulls', url: 'http://www.nba.com/bulls/' },
                    { content: 'Los Angeles Lakers111', url: 'www.nba.com/lakers/' }
                  ] }
              ] }
          ] },
        { content: 'sm-divider' },
        { content: 'News',
          children: [
            { content: 'BBC', url: 'http://www.bbc.com/news' },
            { content: 'CNN', url: 'http://www.cnn.com' },
            { content: 'Xinhua', url: 'http://www.xinhuanet.com' }
          ] },
        { content: 'Technology',
          children: [
            { content: 'Github', url: 'https://github.com' },
            { content: 'StackOverflow', url: 'https://stackoverflow.com/' },
            { content: 'Reddit', url: 'https://www.reddit.com' }
          ] },
        { content: 'Social',
          children: [
            { content: 'Facebook', url: 'https://www.facebook.com' },
            { content: 'Twitter', url: 'https://twitter.com' }
          ] }
      ],
      groupMenu: [
        {
          title: 'Sports',
          list: [
            { content: 'Fivb', url: 'http://www.fivb.com/' },
            { content: 'Fifa', url: 'http://www.fifa.com/' },
            { content: 'sm-divider' },
            { content: 'NBA official site', url: 'http://www.nba.com' },
            { content: 'Chicago Bulls', url: 'http://www.nba.com/bulls/' },
            { content: 'Los Angeles Lakers', url: 'www.nba.com/lakers/' }
          ]
        }, {
          title: 'News',
          list: [
            { content: 'BBC', url: 'http://www.bbc.com/news' },
            { content: 'CNN', url: 'http://www.cnn.com' },
            { content: 'sm-divider' },
            { content: 'Xinhua', url: 'http://www.xinhuanet.com' }
          ]
        }, {
          title: 'Technology',
          list: [
            { content: 'Github', url: 'https://github.com' },
            { content: 'StackOverflow', url: 'https://stackoverflow.com/' },
            { content: 'sm-divider' },
            { content: 'Reddit', url: 'https://www.reddit.com' }
          ]
        }, {
          title: 'Social',
          list: [
            { content: 'Facebook', url: 'https://www.facebook.com' },
            { content: 'Twitter', url: 'https://twitter.com' }
          ]
        }
      ]
    }
  },
  methods: {
    doSome () {
      // console.log(this.value1);
      window.alert('you can do anything in callback!')
    },
    showLog () {
      console.log('show')
    },
    hideLog () {
      console.log('hide')
    },
    values (data) {
      if (data && data.length) {
        this.logs.push(data)
      }
    },
    changeData () {
      this.dynamic = this.headerMenu
    },
    toMultipleLevel () {
      this.dynamic = this.multiLevel
    }
  },
  mounted () {
    this.dynamic = this.menu
  }
})
!
999px

Console