vue 路由 按需 keep-alive

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v-if = "$route.meta.keepAlive" >

v-if = "!$route.meta.keepAlive" >

1. 在 Router 里定义好需要缓存的视图组件

new Router({
    routes: [
        {
            path: '/',
            name: 'index',
            component: () =import('./views/keep-alive/index.vue'),
            meta: {
                deepth: 0.5
            }
        },
        {
            path: '/list',
            name: 'list',
            component: () =import('./views/keep-alive/list.vue'),
            meta: {
                deepth: 1
                keepAlive: true 
            }
        },
        {
            path

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