v-bind问题

[bigggge]

<router-link :to="item.path" :exact="true" :aria-expanded="isExpanded(item) ? 'true' : 'false'"
                     v-if="item.path" @click.native="toggle(index, item)">
          <span class="icon is-small"><i :class="['fa', item.meta.icon]"></i></span>
          {{ item.meta.label || item.name }}
          <span class="icon is-small is-angle" v-if="item.children && item.children.length">
            <i class="fa fa-angle-down"></i>
          </span>
        </router-link>

想问个问题，:to , :aria-expanded 前的冒号是v-bind缩写，README实例中你没有写冒号，会对Mustache语法生效吗？