04. JavaScript can modify the original attribute values in the object, modify the names of the original attributes in the object (two methods), add new attributes in the object, etc. - Code World

04. JavaScript can modify the original attribute values in the object, modify the names of the original attributes in the object (two methods), add new attributes in the object, etc.

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04. JavaScript can modify the original attribute values in the object, modify the names of the original attributes in the object (two methods), add new attributes in the object, etc.

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