# wx.onCompassChange(function callback)

Listens on the compass data change event at a frequency of 5 times per second. Listening automatically starts after the API is called. You can use wx.stopCompass to stop listening.

# Parameters

# function callback

The callback function for the compass data change event.

# Parameters

# Object res

# Sample Code

wx.onCompassChange(function (res) {
  console.log(res.direction)
})

# Accuracy Difference Between iOS and Android

The accuracy values are different on iOS and Android.

• iOS: The accuracy is a number-type value indicating the deviation from the magnetic north pole. 0 indicates the device points to magnetic north, 90 east, 180 south, and so on.
• Android: The accuracy is a string-type enumerated value.