How to choose ref and reactive
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Ref function is preferred because ref function can handle simple data types or complex types, and is often used to define responsive data in data types.
Ref features: When obtaining or modifying values in the code, you need to add .value, but it is not required in the template template.
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reactive is often used to define complex data types as reactive data
Features: No .value is required. If you know clearly what attributes are in the object for a long time, use reactive