<li v-for="(opu,index) in opus">

    <router-link :to="{ name: 'voteDetail', params: { id: opu.id }}" :id="opu.id">

        <div class="opus-img">

           <img v-bind:src="opu.thumb" alt="">

           <span class="num-select">

              {{opu.votes}}票

           </span>

        </div>

        <div class="author clearfix">

            <ul>

                <li style="text-align:left;">{{opu.xingming}}</li>

                <li style="color:#5eb95e;font-size:14px;">{{opu.bianhao}}号</li>

                <li style="text-align:right;">{{opu.nianling}}</li>

            </ul>

        </div>

    </router-link>

    <div v-bind:class="{btnSelectauthod:isInArray(resultgroup,opu.id)}" class="nobtn-select-authod"  @click="postSupport(opu.id)"><span v-if="!isInArray(resultgroup,opu.id)">{{textconfirm}}</span><span v-else>{{notextconfirm}}</span></div>

</li>

   // 判断数组是否有某个元素
   isInArray(arr,value){

        for(var i = ; i < arr.length; i++){

              if(value === arr[i]){

                return true;

              }

        }

        return false;

    },
    //选择作品投票按钮

    postSupport(num){

        this.group.push(num);

        this.resultgroup = [];

        var hash = {};

        for (var i = , elem; (elem = this.group[i]) != null; i++) {

          // 排除重复元素

          if (!hash[elem]) {

            this.resultgroup.push(elem);

            hash[elem] = true;

          }else{

            // 清除指定元素

            Array.prototype.removeByValue = function(val) {

              for(var i=; i<this.length; i++) {

                if(this[i] == val) {

                  this.splice(i, );

                  break;

                }

              }

            }

            this.resultgroup.removeByValue(elem);

            hash[elem] = false;

          }

        }
        // console.log(this.isInArray(this.resultgroup,'9529'))  是否存在9529

        window.sessionStorage.setItem('resultgroup',JSON.stringify(this.resultgroup))

        // console.log(sessionStorage.getItem('resultgroup'))

    },