Sensor - Web APIs 编辑

The Sensor interface of the Sensor APIs is the base class for all the other sensor interfaces. This interface cannot be used directly. Instead it provides properties, event handlers, and methods accessed by interfaces that inherit from it.

If a feature policy blocks use of a feature it is because your code is inconsistent with the policies set on your server. This is not something that would ever be shown to a user. See Feature-Policy for implementation instructions.

Interfaces based on Sensor

Below is a list of interfaces based on the Sensor interface.

• Accelerometer
• AmbientLightSensor
• Gyroscope
• LinearAccelerationSensor
• Magnetometer
• OrientationSensor

Properties

Sensor.activated Read only

Returns a Boolean indicating whether the sensor is active.

Sensor.hasReading Read only

Returns a Boolean indicating whether the sensor has a reading.

Sensor.timestamp Read only

Returns the time stamp of the latest sensor reading.

Event handlers

Sensor.onerror

Called when an error occurs on one of the child interfaces of the Sensor interface.

Sensor.onreading

Called when a reading is taken on one of the child interfaces of the Sensor interface.

Sensor.onactivate

Called when one of the Sensor interface's becomes active.

Methods

Sensor.start()

Activates one of the sensors based on Sensor.

Sensor.stop()

Deactivates one of the sensors based on Sensor.

Specifications

Browser compatibility

BCD tables only load in the browser