一些变量(比如 和 )向应用程序指出是否应该显示界面元素。
Some variables, such as and serve to indicate to the application whether given interface elements.
此外,屏幕或者控件也能够定义本地状态(使用变量),并使用控件结构来对集合进行迭代,从而根据条件显示用户界面的各个部分。
In addition, a screen or control can define local state (using variables) and use control structures to iterate over collections and conditionally show parts of the user interface.
数据绑定会在应用程序状态(例如本地变量或者实体属性)和用户界面之间创造出同步的关系。
Data binding creates a synchronization relationship between application state (e.g. local variables or entity properties) and the user interface.
应用推荐