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Create method is used to create object instance with an already declared object properties and it's prototype and assign it to a newly created prototype object and return's empty object. Assign method is used to assign object properties from source object to the target object and also return's the target object.

Object. assign does not copy prototype properties and methods. This method does not create a deep copy of Source Object, it makes a shallow copy of the data. For the properties containing reference or complex data, the reference is copied to the destination object, instead of creating a separate object.

Assign() 1. The benefit of the Object. assign() method it allows to copy from more than one source object to the single target object.

Assignment Operator The default version makes a shallow copy. If a deep copy is desired for assignments on a user-defined type (e.g. a class), then the assignment operator should be overloaded for the class.

Setting Properties of Existing Objects After you have created an object, you can set or change its properties by calling the property directly with the dot operator (if the object inherits from IDL_Object) or by calling the object's SetProperty method.

DefineProperty() method effectively communicates the idea that you want to define a single property on the object. Same goes for . defineProperties() - it effectively communicates the idea that you want to define multiple properties on the object.

In most cases, methods are actions and properties are qualities. Using a method causes something to happen to an object, while using a property returns information about the object or causes a quality about the object to change.