PositionOptions
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The PositionOptions.enableHighAccuracy property is a Boolean that indicates the application would like to receive the best possible results.
The PositionOptions.enableHighAccuracy property is a Boolean that indicates the application would like to receive the best possible results. If true and if the device is able to provide a more accurate position, it will do so. Note that this can result in slower response times or increased power consumption (with a GPS chip on a mobile device for example). On the other hand, if false (the default value), the device can take the liberty to save resources by responding more quickly and/or using less power.
MDN
The PositionOptions.maximumAge property is a positive long value indicating the maximum age in milliseconds of a possible cached position that is acceptable to return.
The PositionOptions.maximumAge property is a positive long value indicating the maximum age in milliseconds of a possible cached position that is acceptable to return. If set to 0, it means that the device cannot use a cached position and must attempt to retrieve the real current position. If set to Infinity the device must return a cached position regardless of its age.
MDN
The PositionOptions.timeout property is a positive long value representing the maximum length of time (in milliseconds) the device is allowed to take in order to return a position.
The PositionOptions.timeout property is a positive long value representing the maximum length of time (in milliseconds) the device is allowed to take in order to return a position. The default value is Infinity, meaning that getCurrentPosition() won't return until the position is available.
MDN
The PositionOptions interface describes the options to use when calling the geolocation backend. The user agent itself doesn't create such an object itself: it is the calling script that create it and use it as a parameter of Geolocation.getCurrentPosition() and Geolocation.watchPosition().
MDN