BatteryManager extension type
The BatteryManager
interface of the Battery Status API
provides
information about the system's battery charge level. The
navigator.getBattery
method returns a promise that resolves with a
BatteryManager
interface.
Since Chrome 103, the BatteryManager
interface of Battery Status API
only expose to secure context.
API documentation sourced from MDN Web Docs.
- on
- Implemented types
- Available extensions
Properties
- charging → bool
-
The
charging
read-only property of the BatteryManager interface is a Boolean value indicating whether or not the device's battery is currently being charged. When its value changes, theBatteryManager.chargingchange_event
event is fired.no setter - chargingTime → double
-
The
chargingTime
read-only property of the BatteryManager interface indicates the amount of time, in seconds, that remain until the battery is fully charged, or0
if the battery is already fully charged or the user agent is unable to report the battery status information. If the battery is currently discharging, its value isInfinity
. When its value changes, theBatteryManager.chargingtimechange_event
event is fired.no setter - dischargingTime → double
-
The
dischargingTime
read-only property of the BatteryManager interface indicates the amount of time, in seconds, that remains until the battery is fully discharged, orInfinity
if the battery is currently charging rather than discharging or the user agent is unable to report the battery status information. When its value changes, theBatteryManager.dischargingtimechange_event
event is fired.no setter - hashCode → int
-
The hash code for this object.
no setterinherited
- level → double
-
The
level
read-only property of the BatteryManager interface indicates the current battery charge level as a value between0.0
and1.0
. A value of0.0
means the battery is empty and the system is about to be suspended. A value of1.0
means the battery is full or the user agent is unable to report the battery status information. When its value changes, theBatteryManager.levelchange_event
event is fired.no setter - onchargingchange ↔ EventHandler?
-
getter/setter pair
- onchargingtimechange ↔ EventHandler?
-
getter/setter pair
- ondischargingtimechange ↔ EventHandler?
-
getter/setter pair
- onlevelchange ↔ EventHandler?
-
getter/setter pair
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
Methods
-
addEventListener(
String type, EventListener? callback, [JSAny options]) → void -
The
addEventListener()
method of the EventTarget interface sets up a function that will be called whenever the specified event is delivered to the target.inherited -
dispatchEvent(
Event event) → bool -
The
dispatchEvent()
method of the EventTarget sends an Event to the object, (synchronously) invoking the affected event listeners in the appropriate order. The normal event processing rules (including the capturing and optional bubbling phase) also apply to events dispatched manually withdispatchEvent()
.inherited -
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
removeEventListener(
String type, EventListener? callback, [JSAny options]) → void -
The
removeEventListener()
method of the EventTarget interface removes an event listener previously registered with EventTarget.addEventListener from the target. The event listener to be removed is identified using a combination of the event type, the event listener function itself, and various optional options that may affect the matching process; see Matching event listeners for removal.inherited -
toString(
) → String -
A string representation of this object.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited