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TypeScript position example
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import {IPositionTracker} from "IPositionTracker"; | |
import GeoLocationPositionTracker from "GeoLocationPositionTracker"; | |
class App { | |
constructor(private positionTracker : IPositionTracker) { | |
} | |
start(): void { | |
this.positionTracker.subscribe(c => { | |
alert(`Lat: ${c.latitude}; Lon: ${c.longitude}`); | |
}); | |
} | |
} | |
let tracker = new GeoLocationPositionTracker(true); | |
let app = new App(tracker); | |
app.start(); |
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import {IPositionTracker} from "IPositionTracker"; | |
import {ICoordinates} from "ICoordinates"; | |
export default class GeoLocationPositionTracker implements IPositionTracker { | |
constructor(private enableHighAccuracy: boolean = true) { | |
} | |
subscribe(onNewPosition: (coords: ICoordinates) => void): void { | |
const options = { | |
enableHighAccuracy: this.enableHighAccuracy, | |
maximumAge: 15000 | |
}; | |
navigator.geolocation.watchPosition((position) => { | |
onNewPosition({ | |
latitude: position.coords.latitude, | |
longitude: position.coords.longitude | |
}); | |
}, null, options); | |
} | |
} |
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export interface ICoordinates { | |
latitude: number; | |
longitude: number; | |
} |
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<!DOCTYPE html> | |
<html> | |
<head> | |
<title>TypeScript</title> | |
<meta charset="utf-8" /> | |
</head> | |
<body> | |
<h1>TypeScript GPS</h1> | |
<script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.22/system.js"></script> | |
<script> | |
System.defaultJSExtensions = true; | |
System.config({ | |
baseURL: '/' | |
}); | |
System.import('app.js'); | |
</script> | |
</body> | |
</html> |
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import {ICoordinates} from "ICoordinates"; | |
export interface IPositionTracker { | |
subscribe(onNewPosition: (coords: ICoordinates) => void): void; | |
} |
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