ExtJS 6：我应该使用配置对象吗？

Question

我正在使用 ExtJS 6 构建应用程序。我已经阅读了指南、教程和最佳实践技巧。但是我还不明白的是，为什么要使用配置对象？

使用配置：

Ext.define('MyProject.foo.Bar', {
    extends: 'Ext.window.Window',

    ...

    config: {
        title: 'My title'
    }
});

没有配置：

Ext.define('MyProject.foo.Bar', {
    extends: 'Ext.window.Window',

    ...

    title: 'My title'
});

两者都按预期工作。谁能告诉我区别和可能的好处？

Answer 1

Class System 指南中都有描述：

Configurations are completely encapsulated from other class members

Getter and setter methods for every config property are automatically generated into the class prototype during class creation if methods are not already defined.

The auto-generated setter method calls the apply method (if defined on the class) internally before setting the value. You may override the apply method for a config property if you need to run custom logic before setting the value. If your apply method does not return a value, the setter will not set the value. The update method (if defined) will also be called when a different value is set. Both the apply and update methods are passed the new value and the old value as params.

ExtJS 6：我应该使用配置对象吗？

ExtJS 6: Should I use the config object?

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