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Is there any way to determine in Javascript if an object was created using object-literal notation or using a constructor method?
It seems to me that you just access it's parent object, but if the object you are passing in doesn't have a reference to it's parent, I don't think you can tell this, can you?
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A JavaScript object literal is a comma-separated list of name-value pairs wrapped in curly braces. Object literals encapsulate data, enclosing it in a tidy package. This minimizes the use of global variables which can cause problems when combining code.
Objects created using object literal are singletons, this means when a change is made to the object, it affects the object entire the script. Whereas if an object is created using constructor function and a change is made to it, that change won't affect the object throughout the script.
Object literals. An object literal is a list of zero or more pairs of property names and associated values of an object, enclosed in curly braces ( {} ).
What you want is:
Object.getPrototypeOf(obj) === Object.prototype This checks that the object is a plain object created with either new Object() or {...} and not some subclass of Object.
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