Adds extra properties to an object based on the properties owned by other specified objects.
This function is valid in
v2.0.0 to v2.20.0.
This function has been downloaded 23 times.
Object to be modified.
One or more arguments where each one's properties will be added to
A reference to
This function requires the following function which is included automatically:
Every object descended from Object inherits the hasOwnProperty method. This method can be used to determine whether an object has the specified property as a direct property of that object; unlike the in operator, this method does not check down the object's prototype chain.