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Transit Layer

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Page Summary

This example demonstrates how to display the public transit network of London using the Google Maps JavaScript API.
It uses the TransitLayer class to overlay transit data onto a basic map centered on London.
The code provides implementations in both TypeScript and JavaScript, with the JavaScript version being compiled from TypeScript.
The sample includes HTML, CSS, and JavaScript/TypeScript code to create a fully functional web page displaying the map.
Users can interact with the sample via provided links to JSFiddle, Google Cloud Shell, or by cloning and running the code locally.

This example creates a map that displays the public transit network of London, UK.

Read the documentation.

[フレーム]

TypeScript

functioninitMap():void{
constmap=newgoogle.maps.Map(
document.getElementById("map")asHTMLElement,
{
zoom:13,
center:{lat:51.501904,lng:-0.115871},
}
);
consttransitLayer=newgoogle.maps.TransitLayer();
transitLayer.setMap(map);
}
declareglobal{
interfaceWindow{
initMap:()=>void;
}
}
window.initMap=initMap;index.ts

JavaScript

functioninitMap(){
constmap=newgoogle.maps.Map(document.getElementById("map"),{
zoom:13,
center:{lat:51.501904,lng:-0.115871},
});
consttransitLayer=newgoogle.maps.TransitLayer();
transitLayer.setMap(map);
}
window.initMap=initMap;index.js

CSS

/* 
 * Always set the map height explicitly to define the size of the div element
 * that contains the map. 
 */
#map{
height:100%;
}
/* 
 * Optional: Makes the sample page fill the window. 
 */
html,
body{
height:100%;
margin:0;
padding:0;
}
style.css

HTML

<html>
 <head>
 <title>Transit Layer</title>
 <link rel="stylesheet" type="text/css" href="./style.css" />
 <script type="module" src="./index.js"></script>
 </head>
 <body>
 <div id="map"></div>
 <!-- 
 The `defer` attribute causes the script to execute after the full HTML
 document has been parsed. For non-blocking uses, avoiding race conditions,
 and consistent behavior across browsers, consider loading using Promises. See
 https://developers.google.com/maps/documentation/javascript/load-maps-js-api
 for more information.
 -->
 <script
 src="https://maps.googleapis.com/maps/api/js?key=AIzaSyB41DRUbKWJHPxaFjMAwdrzWzbVKartNGg&callback=initMap&v=weekly"
 defer
 ></script>
 </body>
</html>index.html

Try Sample

JSFiddle.net Google Cloud Shell

Clone Sample

Git and Node.js are required to run this sample locally. Follow these instructions to install Node.js and NPM. The following commands clone, install dependencies and start the sample application.

gitclone-bsample-layer-transithttps://github.com/googlemaps/js-samples.git
cdjs-samples
npmi
npmstart

Other samples can be tried by switching to any branch beginning with sample-SAMPLE_NAME.

gitcheckoutsample-SAMPLE_NAME
npmi
npmstart