Have you ever been interested how many files your application consists of? Or how many lines have you and your developers have written in this app? Read to find how to easily count them.
You should not read this post. It describes a bad practice.
xtype has been around since Ext 2.0, there is still a lot of confusion on what it is, how can it be used and what it is good for. The clarification in this article gives you all information you need to use xtype (and other [a-z]types) effectively.
Calculated fields are fields that do not have their own values, but the values are calculated from the other fields of the same record. It is easiest to implement them in Model.
Knowing the phases of component life cycle is important for every developer. Learn what the phases are and what is happening in each of them.
Controller config option refs provides an easy way to get refereneces to views within the controller. However, there’s a catch. In some situations refs do not work as expected or cannot be used at all.