Getter 2

malagege · Jun 22, 2021 · 536f50d · 536f50d
1 parent 750360b
commit 536f50d
Showing 1 changed file with 13 additions and 3 deletions.
diff --git a/src/main.js b/src/main.js
@@ -13,13 +13,23 @@ const store = createStore({
   getters: {
     doneTodos(state){
       return state.todos.filter(todo => todo.done)
-    }
+    },
+    getTodoById: (state) => (id) => {
+      return state.todos.find(todo => todo.id === id)
+    },
+    // 上面 function 等於如下
+    // getTodoById: function(state){
+    //   return function (id){
+    //       return state.todos.find(todo => todo.id === id)
+    //   }
+    // },
   }
 })
 
 
 // 將 store 實例作為插件安裝
 // app.use(store)
 createApp(App).use(store).mount('#app')
-console.log( store.getters.doneTodos[0].id)
-console.log(store.getters.doneTodos);
+
+
+console.log(store.getters.getTodoById(2))