Question -
Consider the following code snippet : var book = { "main title": "JavaScript", 'sub-title': "The Definitive Guide", "for": "all audiences", author: { firstname: "David", surname: "Flanagan" } }; In the above snippet, firstname and surname are
Options:
A .  properties
B .  property values
C .  property names
D .  objects
Answer: Option C firstname and surname are the property names. The value of that particular property is itself an object. That is why these property names are unquoted.
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