1、 Why is data in Vue component a function
In order to ensure the independence and reusability of components, data It is a function. When a component is instantiated, this function will be called to return an object. The computer will assign a memory address to this object. If you instantiate it several times, you will allocate several memory addresses. Their addresses are different. Therefore, the data in each component will not interfere with each other. Changing the state of one component will not change the other components.
Author: Jin Feifei
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