Callback hell is typical problem when we have more then two asynchronous calls. I this article I will try to show worst and best practices.
In react components sometimes ( or often ) We have situation when we encapsulating many child components which for sure can have many properties. This article is discussing how send properties from parent component to its many children.
In ECMA 5 no classes exists but inheritans is created by prototype chains. How to create abstract structures which should not be used in code? I give some possible solution for that.