update zh-cn/application-dev/quick-start/start-with-ets-stage.md.

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

zh-cn/application-dev/quick-start/start-with-ets-stage.md

@@ -216,7 +216,13 @@
            .height('5%')
            // 跳转按钮绑定onClick事件，点击时跳转到第二页
            .onClick(() => {
-             router.pushUrl({ url: 'pages/Second' })
+             console.info(`Succeeded in clicking the 'Next' button.`)
+            // 跳转到第二页
+              router.pushUrl({ url: 'pages/Second' }).then(() => {
+                console.info('Succeeded in jumping to the second page.')
+              }).catch((err) => {
+                console.error(`Failed to jump to the second page.Code is ${err.code}, message is ${err.message}`)
+              })
            })
          }
          .width('100%')
@@ -260,7 +266,14 @@
            .height('5%')
            // 返回按钮绑定onClick事件，点击按钮时返回到第一页
            .onClick(() => {
-             router.back()
+             console.info(`Succeeded in clicking the 'Back' button.`)
+             try {
+               // 返回第一页
+               router.back()
+               console.info('Succeeded in returning to the first page.')
+             } catch (err) {
+               console.error(`Failed to return to the first page.Code is ${err.code}, message is ${err.message}`)
+             }
            })
          }
          .width('100%')