update zh-cn/application-dev/reference/apis/js-apis-window.md.

Signed-off-by: Nge-yafang <geyafang@huawei.com>
Signed-off-by: N葛亚芳 <geyafang@huawei.com>

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

@@ -1373,7 +1373,8 @@ setSystemBarEnable(names: Array<'status' | 'navigation'>, callback: AsyncCallbac
 **示例：** 
 
 ```js
-var names = ["status", "navigation"];
+// 此处以不显示导航栏、状态栏为例
+var names = [];
 windowClass.setSystemBarEnable(names, (err, data) => {
     if (err.code) {
         console.error('Failed to set the system bar to be visible. Cause:' + JSON.stringify(err));
@@ -1406,7 +1407,8 @@ setSystemBarEnable(names: Array<'status' | 'navigation'>): Promise&lt;void&gt;
 **示例：** 
 
 ```js
-var names = ["status", "navigation"];
+// 此处以不显示导航栏、状态栏为例
+var names = [];
 let promise = windowClass.setSystemBarEnable(names);
 promise.then((data)=> {
     console.info('Succeeded in setting the system bar to be visible. Data: ' + JSON.stringify(data));