The Coordinates
interface represents the position and altitude of the device on Earth, as well as the accuracy with which these properties are calculated.
属性
The Coordinates
interface doesn't inherit any property.
Coordinates.latitude
只读- Returns a
double
representing the position's latitude in decimal degrees. Coordinates.longitude
只读- Returns a
double
representing the position's longitude in decimal degrees. Coordinates.altitude
只读- Returns a
double
representing the position's altitude in metres, relative to sea level. This value can benull
if the implementation cannot provide the data. Coordinates.accuracy
只读- Returns a
double
representing the accuracy of thelatitude
andlongitude
properties, expressed in meters. Coordinates.altitudeAccuracy
只读- Returns a
double
representing the accuracy of thealtitude
expressed in meters. This value can benull
. Coordinates.heading
只读- Returns a
double
representing the direction in which the device is traveling. This value, specified in degrees, indicates how far off from heading due north the device is.0
degrees represents true true north, and the direction is determined clockwise (which means that east is90
degrees and west is270
degrees). Ifspeed
is0
,heading
isNaN
. If the device is unable to provideheading
information, this value isnull
. Coordinates.speed
只读- Returns a
double
representing the velocity of the device in meters per second. This value can benull
.
方法
The Coordinates
interface neither implements, nor inherits any method.
规范
Specification | Status | Comment |
---|---|---|
Geolocation API Coordinates |
Recommendation | Initial specification. |
浏览器兼容性
Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari |
---|---|---|---|---|---|
Basic support | 5 | 3.5 (1.9.1) | 9 | 10.60 Removed in 15.0 Reintroduced in 16.0 |
5 |
Feature | Android | Chrome for Android | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile |
---|---|---|---|---|---|---|
Basic support | ? | ? | 4.0 (4) | ? | 10.60 | ? |
请参见
- Using geolocation
- The
Geolocation
interface that uses it.