关于vue里面的class的问题

Question

怎样让下面图中的两个class共存，前面那个是我循环是添加的class。后面点击时给他添加一个这个class

    <div class="backstage-left-bottom">
            <ul v-for="subMenu in this.$router.options.routes" v-if="subMenu.isBackStage">
              <li v-for="item in subMenu.children" :class="item.icon" :class="{isPosition:type==item.icon}" @click="type==item.icon">
                <ul class="child-router">
                  <li v-for="menu in item.children">{{menu}}</li>
                </ul>
              </li>
            </ul>
          </div>

Answer 1

:class="[item.icon,{isPosition: type == item.icon}]"

@click那里是不是写多了个=

Answer 2

:class="item.icon" :class="{isPosition:type==item.icon}"

=>

:class="{item.icon, isPosition: type == item.icon}"