The props property in Vue is used to pass values between components. Its main function and meaning is to receive data from the outside. It is equivalent to data and methods.When the attributes in the newly added mixins.js file conflict with the attributes in the component, such as the data attribute, methods attribute, etc., the attributes in the component shall prevail. If there is no conflict, the incoming props will be executed. But there are special ones: when there is a conflict between the lifecycle hook functions, the hooks passed in by props or in mixins.js are used first.