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。 但我还不明白的是，为什么要使用配置对象？
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？
最佳答案
Class System 中均有描述指南:
- 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.
关于javascript - ExtJS 6 : Should I use the config object?，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/32689189/