NettetThe computed property is another option that is part of the options API, and in Vue 2, it sits at the same level as methods, data, watch, and lifecycle methods like mounted. In Vue 3, computed can now be used in the setup function (I bet you didn't see that one coming). I have to import computed from Vue like this: Nettetmounted (){ console. log (this. add); } 复制代码. 结果如下. 确实methods中的方法自动添加到组件实例身上了. 3. Vue 会自动为 methods 绑定 this，指向组件实例. 这点其实刚刚已经验证了，add函数中使用了this，表示当前组件实例. this. count ++ 复制代码. 4.

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Nettetrefs returned from setup are automatically shallow unwrapped when accessed in the template so you do not need to use .value when accessing them. They are also unwrapped in the same way when accessed on this.. setup() itself does not have access to the component instance - this will have a value of undefined inside setup().You can access … NettetThe computed property is another option that is part of the options API, and in Vue 2, it sits at the same level as methods, data, watch, and lifecycle methods like mounted. In … growing three sisters in containers

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NettetThe .mount() method should always be called after all app configurations and asset registrations are done. Also note that its return value, unlike the asset registration … NettetWe are going to look at how data, methods, computed, and watch works in Vue and what we might miss out when working with it. Our roadmap will be — Data; Methods; … NettetVue各阶段数据可使用情况：created，computed，data，prop，mounted，methods，watch. created时，可用data和prop中的数据。 computed的属性，当在mounted或者dom中使用到时，才会属性的执行代码。 最后是mouted，可使用前面的数据，并且此时才可以操作dom。 growing thrift