#### 自定义页脚 更复杂的例子，自定义了页脚的按钮，点击提交后进入 loading 状态，完成后关闭。 不需要默认确定取消按钮时，你可以把 `footer` 设为 `null`。 #### Customized Footer A more complex example which define a customized footer button bar, the dialog will change to loading state after clicking submit button, when the loading is over, the modal dialog will be closed. You could set `footer` to `null` if you don't need default footer buttons. ```html ```