<div id="app">
        <!---->
        <keep-alive>
            <router-view v-if="$route.meta.keepAlive"></router-view>
        </keep-alive>
        <router-view v-if="!$route.meta.keepAlive"></router-view>
        <!---->
<!--        <router-view v-if="isRouterAlive"></router-view> -->
    </div>
 how to get the following  vMuf if = "isRouterAlive"  to the top, but there is already  v-if  on it 
