Signed-off-by: panqinxu <panqinxu1@huawei.com>

zh-cn/application-dev/reference/apis/js-apis-fileio.md

@@ -17,6 +17,19 @@ import fileio from '@ohos.fileio';
 
 使用该功能模块对文件/目录进行操作前，需要先获取其应用沙箱路径，获取方式及其接口用法请参考：
 
+Stage模型
+ ```js
+import Ability from '@ohos.application.Ability'
+class MainAbility extends Ability {
+    onWindowStageCreate(windowStage) {
+        let context = this.context;
+        let path = context.filesDir;
+    }
+}
+ ```
+ Stage模型context的具体获取方法参见[Stage模型](https://gitee.com/openharmony/docs/blob/master/zh-cn/application-dev/reference/apis/js-apis-ability-context.md#abilitycontext)
+
+FA模型
  ```js
  import featureAbility from '@ohos.ability.featureAbility';
  let context = featureAbility.getContext();
@@ -25,7 +38,7 @@ import fileio from '@ohos.fileio';
       path = data;
  })
  ```
-
+ FA模型context的具体获取方法参见[FA模型](https://gitee.com/openharmony/docs/blob/master/zh-cn/application-dev/reference/apis/js-apis-Context.md#context%E6%A8%A1%E5%9D%97)
 
 ## fileio.stat