Any Component can be created implicitly as an object config with an xtype specified, allowing it to be declared and passed into the rendering pipeline without actually being instantiated as an object.

• 有人会问，有必要这么详细的分类吗？当然有，不过为了不涉及其他过多的话题我假设你懂得原因（参见文章底部的[[%23延伸阅读]]）部分以了解更多的内容）。