# Vibration

You can make the mobile phones that support this feature vibrate! to do so, you just need the vibrate command which syntax is:

If you want it to vibrate once: **"vibrate \[time]"** If you want it to vibrate in a pattern: **"vibrate \[time] \[time] \[time] ..."**

The following will make the device vibrate for 100 miliseconds.

```javascript
"vibrate 100"
```

While this will make it vibrate in a pattern:

```javascript
"vibrate 100 200 300 200 100"
```