我在v-for里面循环生成route-link，想给他绑定一个事件，结果报错说事件未定义，下面是我的代码

    <ul class="card-list">
      <li v-for="(url, index) in urls">
        <router-link class="linkTo" :to="'/Page' + (index + 1)">
          <img @click="total(index)" class="cardWidth" :src="url" alt="">
        </router-link>
      </li>
    </ul>
    
    method: {
      total: function (index) {
        console.log(index)
      }
    }
    
    

报错信息:

Property or method "total" is not defined on the instance but referenced during render. Make sure to declare reactive data properties in the data option. 
Uncaught TypeError: _vm.total is not a function