Function isPlainObject

Checks whether a given value is a plain object, where a plain object is an object that was NOT derived from a Super Class, ie, it is:

• an object literal { name: "A" }
• created with new Object({ name: "B" })
• created with Object.create({ name: "C" })

A plain object is NOT:

• new Date()
• new Person({ name: "D" })

Returns

Returns a boolean indicating whether the value is a plain object