js-apis-vibrator.md

# Vibrator

> ![icon-note.gif](public_sys-resources/icon-note.gif) **Note:**
> The initial APIs of this module are supported since API version 8. Newly added APIs will be marked with a superscript to indicate their earliest API version.


## Modules to Import

```
import vibrator from '@ohos.vibrator';
```


## vibrator.vibrate

vibrate(duration: number): Promise<void>

Triggers vibration with a specific duration. This API uses a promise to return the execution result.

**Required permissions**: ohos.permission.VIBRATE (a system permission)

**System capability**: SystemCapability.Sensors.MiscDevice


**Parameters**
| Name     | Type    | Mandatory  | Description          |
| -------- | ------ | ---- | ------------ |
| duration | number | Yes   | Vibration duration.|

**Return value**
| Type                 | Description         |
| ------------------- | ----------- |
| Promise<void> | Promise used to indicate whether the vibration is triggered successfully.|


**Example**
  ```
  vibrator.vibrate(1000).then(()=>{
      console.log("Promise returned to indicate a successful vibration.");
  }, (error)=>{
      console.log("error.code"+error.code+"error.message"+error.message);
  });
  ```


## vibrator.vibrate

vibrate(duration: number, callback?: AsyncCallback<void>): void

Triggers vibration with a specific duration. This API uses an asynchronous callback to return the execution result.

**Required permissions**: ohos.permission.VIBRATE (a system permission)

**System capability**: SystemCapability.Sensors.MiscDevice

**Parameters**
| Name     | Type                       | Mandatory  | Description                     |
| -------- | ------------------------- | ---- | ----------------------- |
| duration | number                    | Yes   | Vibration duration.           |
| callback | AsyncCallback<void> | No   | Callback used to indicate whether the vibration is triggered successfully.|

**Example**
  ```
  vibrator.vibrate(1000,function(error){
      if(error){
          console.log("error.code"+error.code+"error.message"+error.message);
      }else{
          console.log("Callback returned to indicate a successful vibration.");
      }
  })
  ```


## vibrator.vibrate

vibrate(effectId: EffectId): Promise<void>

Triggers vibration with a specific effect. This API uses a promise to return the execution result.

**Required permissions**: ohos.permission.VIBRATE (a system permission)

**System capability**: SystemCapability.Sensors.MiscDevice

**Parameters**
| Name     | Type                   | Mandatory  | Description           |
| -------- | --------------------- | ---- | ------------- |
| effectId | [EffectId](#effectid) | Yes   | String that indicates the vibration effect.|

**Return value**
| Type                 | Description         |
| ------------------- | ----------- |
| Promise<void> | Promise used to indicate whether the vibration is triggered successfully.|

**Example**
  ```
  vibrator.vibrate(vibrator.EffectId.EFFECT_CLOCK_TIMER).then(()=>{
      console.log("Promise returned to indicate a successful vibration.");
  }, (error)=>{
      console.log("error.code"+error.code+"error.message"+error.message);
  });
  ```


## vibrator.vibrate

vibrate(effectId: EffectId, callback?: AsyncCallback<void>): void

Triggers vibration with a specific effect. This API uses an asynchronous callback to return the execution result.

**Required permissions**: ohos.permission.VIBRATE (a system permission)

**System capability**: SystemCapability.Sensors.MiscDevice

**Parameters**
| Name     | Type                       | Mandatory  | Description                     |
| -------- | ------------------------- | ---- | ----------------------- |
| effectId | [EffectId](#effectid)     | Yes   | String that indicates the vibration effect.          |
| callback | AsyncCallback<void> | No   | Callback used to indicate whether the vibration is triggered successfully.|

**Example**
  ```
  vibrator.vibrate(vibrator.EffectId.EFFECT_CLOCK_TIMER, function(error){
      if(error){
          console.log("error.code"+error.code+"error.message"+error.message);
      }else{
          console.log("Callback returned to indicate a successful vibration.");
      }
  })
  ```


## vibrator.stop

stop(stopMode: VibratorStopMode): Promise<void>

Stops the vibration based on the specified **stopMode**. This API uses a promise to return the execution result. If the specified **stopMode** is different from the mode used to trigger the vibration, this API fails to be called.

**Required permissions**: ohos.permission.VIBRATE (a system permission)

**System capability**: SystemCapability.Sensors.MiscDevice

**Parameters**
| Name     | Type                                   | Mandatory  | Description             |
| -------- | ------------------------------------- | ---- | --------------- |
| stopMode | [VibratorStopMode](#vibratorstopmode) | Yes   | Vibration mode to stop.|

**Return value**
| Type                 | Description         |
| ------------------- | ----------- |
| Promise<void> | Promise used to indicate whether the vibration is stopped successfully.|

**Example**
  ```
  vibrator.stop(vibrator.VibratorStopMode.VIBRATOR_STOP_MODE_PRESET).then(()=>{
      console.log("Promise returned to indicate a successful vibration.");
  }, (error)=>{
      console.log("error.code"+error.code+"error.message"+error.message);
  });
  ```


## vibrator.stop

stop(stopMode: VibratorStopMode, callback?: AsyncCallback<void>): void;

Stops the vibration based on the specified **stopMode**. This API uses an asynchronous callback to return the execution result. If the specified **stopMode** is different from the mode used to trigger the vibration, this API fails to be called.

**Required permissions**: ohos.permission.VIBRATE (a system permission)

**System capability**: SystemCapability.Sensors.MiscDevice

**Parameters**
| Name     | Type                                   | Mandatory  | Description                     |
| -------- | ------------------------------------- | ---- | ----------------------- |
| stopMode | [VibratorStopMode](#vibratorstopmode) | Yes   | Vibration mode to stop.        |
| callback | AsyncCallback<void>             | No   | Callback used to indicate whether the vibration is stopped successfully.|

**Example**
  ```
  vibrator.stop(vibrator.VibratorStopMode.VIBRATOR_STOP_MODE_PRESET, function(error){
      if(error){
          console.log("error.code"+error.code+"error.message"+error.message);
      }else{
          console.log("Callback returned to indicate a successful stop.");
      }
  })
  ```


## EffectId

Describes the vibration effect.

**System capability**: SystemCapability.Sensors.MiscDevice

| Name                | Default Value                 | Description             |
| ------------------ | -------------------- | --------------- |
| EFFECT_CLOCK_TIMER | "haptic.clock.timer" | Vibration effect of the vibrator when a user adjusts the timer.|


## VibratorStopMode

Describes the vibration mode to stop.

**System capability**: SystemCapability.Sensors.MiscDevice

| Name                       | Default Value     | Description                                      |
| ------------------------- | -------- | ---------------------------------------- |
| VIBRATOR_STOP_MODE_TIME   | "time"   | The vibration to stop is in **duration** mode. This vibration is triggered with the parameter **duration** of the **number** type.|
| VIBRATOR_STOP_MODE_PRESET | "preset" | The vibration to stop is in **EffectId** mode. This vibration is triggered with the parameter **effectId** of the **EffectId** type.|