Update docs (13058)

Signed-off-by: Nester.zhou <ester.zhou@huawei.com>

en/application-dev/reference/apis/js-apis-system-timer.md

-# System Timer
+# @ohos.systemTimer
 
 The **systemTimer** module provides system timer features. You can use the APIs of this module to implement the alarm clock and other timer services.
 
@@ -33,13 +33,13 @@ Defines the initialization options for **createTimer**.
 
 **System capability**: SystemCapability.MiscServices.Time
 
-| Name     | Type                             | Mandatory| Description                                                        |
-| --------- | --------------------------------- | ---- | ------------------------------------------------------------ |
-| type      | number                            | Yes  | Timer type.<br>**1**: CPU time type. The start time of the timer cannot be later than the current system time.<br>**2**: wakeup type.<br>**4**: exact type.<br>**5**: idle type (not supported currently).|
-| repeat    | boolean                           | Yes  | Whether the timer is a repeating timer. The value **true** means that the timer is a repeating timer, and **false** means that the timer is a one-shot timer.                       |
-| interval  | number                            | No  | Repeat interval. For a repeating timer, the value must be greater than 5000 ms. For a one-shot timer, the value is **0**.|
-| wantAgent | [WantAgent](js-apis-wantAgent.md) | No  | **WantAgent** object of the notification to be sent when the timer expires. (An application MainAbility can be started, but not a Service ability.)|
-| callback  | number                            | Yes  | Callback used to return the timer ID.                            |
+| Name     | Type                                         | Mandatory| Description                                                        |
+| --------- | --------------------------------------------- | ---- | ------------------------------------------------------------ |
+| type      | number                                        | Yes  | Timer type.<br>**1**: CPU time type. (The start time of the timer cannot be later than the current system time.)<br>**2**: wakeup type.<br>**4**: exact type.<br>**8**: idle type (not supported currently).|
+| repeat    | boolean                                       | Yes  | Whether the timer is a repeating timer. The value **true** means that the timer is a repeating timer, and **false** means that the timer is a one-shot timer.                       |
+| interval  | number                                        | No  | Repeat interval. For a repeating timer, the value must be greater than 5000 ms. For a one-shot timer, the value is **0**.|
+| wantAgent | [WantAgent](js-apis-app-ability-wantAgent.md) | No  | **WantAgent** object of the notification to be sent when the timer expires. (An application MainAbility can be started, but not a Service ability.)|
+| callback  | number                                        | Yes  | Callback used to return the timer ID.                            |
 
 
 ## systemTimer.createTimer
@@ -48,6 +48,8 @@ createTimer(options: TimerOptions, callback: AsyncCallback&lt;number&gt;): void
 
 Creates a timer. This API uses an asynchronous callback to return the result.
 
+**System API**: This is a system API.
+
 **System capability**: SystemCapability.MiscServices.Time
 
 **Parameters**
@@ -66,13 +68,17 @@ export default {
             type: systemTimer.TIMER_TYPE_REALTIME,
             repeat: false
         };
-        systemTimer.createTimer(options, (error, data) => {
-            if (error) {
-                console.error(`Failed to create timer. Cause:` + JSON.stringify(error));
-                return;
-            }
-            console.log(`Succeeded in creating timer. Data:` + JSON.stringify(data));
-        });
+        try {
+            systemTimer.createTimer(options, (error) => {
+                if (error) {
+                    console.info(`Failed to create timer. message:${error.message}, code:${error.code}`);
+                    return;
+                }
+           		console.info(`Succeeded in creating timer.`);
+        	});
+        } catch(e) {
+            console.info(`Failed to create timer. message:${e.message}, code:${e.code}`);
+        }
     }
 }
 ```
@@ -83,6 +89,8 @@ createTimer(options: TimerOptions): Promise&lt;number&gt;
 
 Creates a timer. This API uses a promise to return the result.
 
+**System API**: This is a system API.
+
 **System capability**: SystemCapability.MiscServices.Time
 
 **Parameters**
@@ -105,12 +113,16 @@ export default {
         let options = {
             type: systemTimer.TIMER_TYPE_REALTIME,
             repeat:false
-        };
-        systemTimer.createTimer(options).then((data) => {
-            console.log(`Succeeded in creating timer. Data:` + JSON.stringify(data));
-        }).catch((error) => {
-            console.error(`Failed to create timer. Cause:` + JSON.stringify(error));
-        });
+        };     
+        try {
+    		systemTimer.createTimer(options).then(() => {
+    			console.info(`Succeeded in creating timer.`);
+			}).catch((error) => {
+    			console.info(`Failed to create timer. message:${error.message}, code:${error.code}`);
+			});
+        } catch(e) {
+            console.info(`Failed to create timer. message:${e.message}, code:${e.code}`);
+        }
     }
 }
 ```
@@ -121,6 +133,8 @@ startTimer(timer: number, triggerTime: number, callback: AsyncCallback&lt;void&g
 
 Starts a timer. This API uses an asynchronous callback to return the result.
 
+**System API**: This is a system API.
+
 **System capability**: SystemCapability.MiscServices.Time
 
 **Parameters**
@@ -143,12 +157,17 @@ export default {
       let timerId = await systemTimer.createTimer(options)
       let triggerTime = new Date().getTime()
       triggerTime += 3000
-      systemTimer.startTimer(timerId, triggerTime, (error) => {
-          if (error) {
-              console.error(`Failed to start timer. Cause:` + JSON.stringify(error));
-              return;
-          }
-      });
+      try {
+          systemTimer.startTimer(timerId, triggerTime, (error) => {
+              if (error) {
+                  console.info(`Failed to start timer. message:${error.message}, code:${error.code}`);
+                  return;
+              }
+              console.info(`Succeeded in starting timer.`);
+          });
+      } catch(e) {
+          console.info(`Failed to start timer. message:${e.message}, code:${e.code}`);
+      }
     }
 }
 ```
@@ -159,6 +178,8 @@ startTimer(timer: number, triggerTime: number): Promise&lt;void&gt;
 
 Starts a timer. This API uses a promise to return the result.
 
+**System API**: This is a system API.
+
 **System capability**: SystemCapability.MiscServices.Time
 
 **Parameters**
@@ -186,11 +207,15 @@ export default {
         let timerId = await systemTimer.createTimer(options)
         let triggerTime = new Date().getTime()
         triggerTime += 3000
-        systemTimer.startTimer(timerId, triggerTime).then((data) => {
-            console.log(`Succeeded in startting timer. Data:` + JSON.stringify(data));
-        }).catch((error) => {
-            console.error(`Failed to start timer. Cause:` + JSON.stringify(error));
-        });
+        try {
+            systemTimer.startTimer(timerId, triggerTime).then(() => {
+            	console.info(`Succeeded in starting timer.`);
+       		}).catch((error) => {
+            	console.info(`Failed to start timer. message:${error.message}, code:${error.code}`);
+        	});
+        } catch(e) {
+            console.info(`Failed to start timer. message:${e.message}, code:${e.code}`);
+        } 
     }
 }
 ```
@@ -201,6 +226,8 @@ stopTimer(timer: number, callback: AsyncCallback&lt;void&gt;): void
 
 Stops a timer. This API uses an asynchronous callback to return the result.
 
+**System API**: This is a system API.
+
 **System capability**: SystemCapability.MiscServices.Time
 
 **Parameters**
@@ -214,22 +241,27 @@ Stops a timer. This API uses an asynchronous callback to return the result.
 
 ```js
 export default {
-  async systemTimer () {
-      let options = {
-          type: systemTimer.TIMER_TYPE_REALTIME,
-          repeat:false
-      }
-      let timerId = await systemTimer.createTimer(options)
-      let triggerTime = new Date().getTime()
-      triggerTime += 3000
-      systemTimer.startTimer(timerId, triggerTime)
-      systemTimer.stopTimer(timerId, (error) => {
-          if (error) {
-              console.error(`Failed to stop timer. Cause:` + JSON.stringify(error));
-              return;
-          }
-      });
-  }
+    async systemTimer () {
+        let options = {
+            type: systemTimer.TIMER_TYPE_REALTIME,
+            repeat:false
+        }
+        let timerId = await systemTimer.createTimer(options)
+        let triggerTime = new Date().getTime()
+        triggerTime += 3000
+        systemTimer.startTimer(timerId, triggerTime)
+        try {
+            systemTimer.stopTimer(timerId, (error) => {
+                if (error) {
+                    console.info(`Failed to stop timer. message:${error.message}, code:${error.code}`);
+                    return;
+                }
+                console.info(`Succeeded in stopping timer.`);
+            });
+        } catch(e) {
+            console.info(`Failed to stop timer. message:${e.message}, code:${e.code}`);
+        }
+	}
 }
 ```
 
@@ -239,6 +271,8 @@ stopTimer(timer: number): Promise&lt;void&gt;
 
 Stops a timer. This API uses a promise to return the result.
 
+**System API**: This is a system API.
+
 **System capability**: SystemCapability.MiscServices.Time
 
 **Parameters**
@@ -257,21 +291,25 @@ Stops a timer. This API uses a promise to return the result.
 
 ```js
 export default {
-  async systemTimer (){
-      let options = {
-          type: systemTimer.TIMER_TYPE_REALTIME,
-          repeat:false
-      }
-      let timerId = await systemTimer.createTimer(options)
-  	  let triggerTime = new Date().getTime()
-      triggerTime += 3000
-      systemTimer.startTimer(timerId, triggerTime)
-      systemTimer.stopTimer(timerId).then((data) => {
-          console.log(`Succeeded in stopping timer. Data:` + JSON.stringify(data));
-      }).catch((error) => {
-          console.error(`Failed to stop timer. Cause:` + JSON.stringify(error));
-      });
-  }
+    async systemTimer (){
+        let options = {
+            type: systemTimer.TIMER_TYPE_REALTIME,
+            repeat:false
+        }
+        let timerId = await systemTimer.createTimer(options)
+        let triggerTime = new Date().getTime()
+        triggerTime += 3000
+        systemTimer.startTimer(timerId, triggerTime)
+        try {
+            systemTimer.stopTimer(timerId).then(() => {
+                console.info(`Succeeded in stopping timer.`);
+            }).catch((error) => {
+                console.info(`Failed to stop timer. message:${error.message}, code:${error.code}`);
+            });
+        } catch(e) {
+            console.info(`Failed to stop timer. message:${e.message}, code:${e.code}`);
+        }
+    }
 }
 ```
 
@@ -281,6 +319,8 @@ destroyTimer(timer: number, callback: AsyncCallback&lt;void&gt;): void
 
 Destroys a timer. This API uses an asynchronous callback to return the result.
 
+**System API**: This is a system API.
+
 **System capability**: SystemCapability.MiscServices.Time
 
 **Parameters**
@@ -304,12 +344,17 @@ export default {
         triggerTime += 3000
         systemTimer.startTimer(timerId, triggerTime)
         systemTimer.stopTimer(timerId)
-        systemTimer.destroyTimer(timerId, (error) => {
-            if (error) {
-                console.error(`Failed to destroy timer. Cause:` + JSON.stringify(error));
-                return;
-            }
-        });
+        try {
+            systemTimer.destroyTimer(timerId, (error) => {
+                if (error) {
+                    console.info(`Failed to destroy timer. message:${error.message}, code:${error.code}`);
+                    return;
+                }
+                console.info(`Succeeded in destroying timer.`);
+        	});
+        } catch(e) {
+            console.info(`Failed to destroying timer. message:${e.message}, code:${e.code}`);
+        }
     }
 }
 ```
@@ -320,6 +365,8 @@ destroyTimer(timer: number): Promise&lt;void&gt;
 
 Destroys a timer. This API uses a promise to return the result.
 
+**System API**: This is a system API.
+
 **System capability**: SystemCapability.MiscServices.Time
 
 **Parameters**
@@ -348,11 +395,15 @@ export default {
         triggerTime += 3000
         systemTimer.startTimer(timerId, triggerTime)
         systemTimer.stopTimer(timerId)
-        systemTimer.destroyTimer(timerId).then((data) => {
-            console.log(`Succeeded in destroying timer. Data:` + JSON.stringify(data));
-        }).catch((error) => {
-            console.error(`Failed to destroy timer. Cause:` + JSON.stringify(error));
-        });
+        try {
+            systemTimer.destroyTimer(timerId).then(() => {
+            	 console.info(`Succeeded in destroying timer.`);
+            }).catch((error) => {
+                console.info(`Failed to destroy timer. message:${error.message}, code:${error.code}`);
+            });
+        } catch(e) {
+            console.info(`Failed to destroying timer. message:${e.message}, code:${e.code}`);
+        }
     }
 }
 ```