add user

Signed-off-by: Nunknown <sijunjie@huawei.com>

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

@@ -21,6 +21,18 @@
 **示例：**
     
   ```ts
+import hilog from '@ohos.hilog';
+import Ability from '@ohos.application.Ability'
+import Window from '@ohos.window'
+
+export default class MainAbility extends Ability {
+    onCreate(want, launchParam) {
+    }
+
+    onDestroy() {
+    }
+
+    onWindowStageCreate(windowStage: Window.WindowStage) {
         let envCallback = {
             onConfigurationUpdated(config) {
                 console.info(`envCallback onConfigurationUpdated success: ${JSON.stringify(config)}`)
@@ -32,6 +44,20 @@
                 let hasPointerDevice = config.hasPointerDevice;
             }
         };
-  var callbackId = applicationContext.registerEnvironmentCallback(envCallback);
+
+        let applicationContext = this.context.getApplicationContext();
+        applicationContext.registerEnvironmentCallback(envCallback);
+
+        windowStage.loadContent('pages/index', (err, data) => {
+            if (err.code) {
+                hilog.isLoggable(0x0000, 'testTag', hilog.LogLevel.ERROR);
+                hilog.error(0x0000, 'testTag', 'Failed to load the content. Cause: %{public}s', JSON.stringify(err) ?? '');
+                return;
+            }
+            hilog.isLoggable(0x0000, 'testTag', hilog.LogLevel.INFO);
+            hilog.info(0x0000, 'testTag', 'Succeeded in loading the content. Data: %{public}s', JSON.stringify(data) ?? '');
+        });
+    }
+}
   ```