The way vue.js determines whether an object is empty is to convert the object to json. If it is an empty collection {}, then the object is an empty object, such as [JSON.stringify(object)=='{ }'].
The method to determine whether the object is empty is as follows:
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Method 1: Convert the object to JSON. If it is an empty collection {}, then it is an empty object.
JSON.stringify(object)=='{}'
Method 2: Determine the length of the object. If it is zero, it is an empty object.
Object.keys(object).length==0
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