04_mbta_data.html

<!-- --------------------------------- -->
<!-- ------- Request MBTA data ------- -->
<!-- --------------------------------- -->

<script>

	// Request bus data from MBTA
	async function getBusLocations(){
		// MBTA real-time data for bus route 1
		const url = 'https://api-v3.mbta.com/vehicles?filter[route]=1&include=trip';

		var response = await fetch(url);
		var json 	 = await response.json();

		// console.log(json);
		return json;
		
	}

	// request data on a timer
	async function run(){

		// request bus data
		var buses = await getBusLocations();

		//  loop buses
		buses.data.forEach(function(bus){
			var id = bus.id;
			var lat = bus.attributes.latitude;
			var long = bus.attributes.longitude;
			console.log(
				'id:'   + id  + 
				',lat'  + lat +
				',long' + long
			);

		});

		// timer
		setTimeout(run, 15000);
        
	}

	run();
	getBusLocations();

</script>