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bertt/Leaflet and TypeScript sample

Last active January 25, 2022 21:17
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Using Leaflet in TypeScript. Original code see http://leafletjs.com/examples/quick-start-example.html
Raw
Leaflet and TypeScript sample
// http://leafletjs.com/examples/quick-start-example.html in TypeScript
/// <reference path="leaflet.d.ts" />
var map = new L.Map("map");
map.setView(new L.LatLng(51.505, -0.09), 13);
var layer =new L.TileLayer("http://{s}.tile.cloudmade.com/BC9A493B41014CAABB98F0471D759707/997/256/{z}/{x}/{y}.png", { maxZoom: 18, attribution: "attribution test" })
layer.addTo(map);
// add marker
var marker = new L.Marker(new L.LatLng(51.5, -0.09));
marker.addTo(map).bindPopup("<b>Hello world!</b><br />I am a popup.").openPopup();
// add circle
var circle = new L.Circle(new L.LatLng(51.508, -0.11), 500, {
color: 'red',
fillColor: '#f03',
fillOpacity: 0.5
}).addTo(map).bindPopup("I am a circle.");
// add polygon
var latlongs : L.LatLng[];
latlongs= [
new L.LatLng(51.509, -0.08),
new L.LatLng(51.503, -0.06),
new L.LatLng(51.51, -0.047)
];
var polygon = new L.Polygon(latlongs).addTo(map).bindPopup("I am a polygon.");
// popup on mapclick
var popup = new L.Popup();
function onMapClick(e) {
popup
.setLatLng(e.latlng)
.setContent("You clicked the map at " + e.latlng.toString())
.openOn(map);
}
map.on('click', onMapClick);
Raw
Leaflet and TypeScript sample
<!DOCTYPE html>
<html lang="en" xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta charset="utf-8" />
<title>TypeScript HTML App</title>
<link rel="stylesheet" href="http://cdn.leafletjs.com/leaflet-0.5/leaflet.css" />
<script src="http://cdn.leafletjs.com/leaflet-0.5.1/leaflet.js"></script>
</head>
<body>
<div id="map" style="width: 600px; height: 400px"></div>
<script src="map.js"></script>
</body>
</html>
@atlantageek
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where would I find the leaflet.d.ts to get this running. The one in Definitely Typed requires geojson .

@samansaeedi102
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what is that goddamn L?my typescript does not understand it.

@bertt
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Author

bertt commented Feb 13, 2021 •
edited

you can do:

$ npm install --save @types/leaflet

and change the first line

from:

/// <reference path="leaflet.d.ts" />

to:

/// <reference path="./node_modules/@types/leaflet/index.d.ts" />

Now compile and start a webserver:

$ tsc map.ts   
$ python3 -m http.server

And browse to http://localhost:8000/

@samansaeedi102
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I do appreciate your reply. I will give it a try.

@nauranand
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Thank you for the leaflet example, Bertt!

@CLTanuki
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Thanks for an example.

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