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nicordev/intro.html

Last active September 16, 2019 20:23
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Quick start guide for leaflet from leafletjs.com
Raw
intro.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
<link rel="stylesheet" href="https://unpkg.com/[email protected]/dist/leaflet.css"
integrity="sha512-xwE/Az9zrjBIphAcBb3F6JVqxf46+CDLwfLMHloNu6KEQCAWi6HcDUbeOfBIptF7tcCzusKFjFw2yuvEpDL9wQ=="
crossorigin="" />
<style>
#map {
max-width: 600px;
height: 400px;
}
</style>
</head>
<body>
<div id="map"></div>
<!-- Make sure you put this AFTER Leaflet's CSS -->
<script src="https://unpkg.com/[email protected]/dist/leaflet.js"
integrity="sha512-GffPMF3RvMeYyc1LWMHtK8EbPv0iNZ8/oTtHPx9/cc2ILxQ+u905qIwdpULaqDkyBKgOaB57QTMg7ztg8Jm2Og=="
crossorigin=""></script>
<script>
var map = L.map('map').setView([51.505, -0.09], 13);
L.tileLayer('https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png', {
attribution: '&copy; <a href="https://www.openstreetmap.org/copyright">OpenStreetMap</a> contributors'
}).addTo(map);
L.marker([51.5, -0.09]).addTo(map)
.bindPopup('A pretty CSS3 popup.<br> Easily customizable.')
.openPopup();
</script>
</body>
</html>
Raw
leaflet_tuto.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
<link rel="stylesheet" href="https://unpkg.com/[email protected]/dist/leaflet.css"
integrity="sha512-xwE/Az9zrjBIphAcBb3F6JVqxf46+CDLwfLMHloNu6KEQCAWi6HcDUbeOfBIptF7tcCzusKFjFw2yuvEpDL9wQ=="
crossorigin="" />
<style>
#mapid {
max-width: 600px;
height: 400px;
}
</style>
</head>
<body>
<div id="mapid"></div>
<!-- Make sure you put this AFTER Leaflet's CSS -->
<script src="https://unpkg.com/[email protected]/dist/leaflet.js"
integrity="sha512-GffPMF3RvMeYyc1LWMHtK8EbPv0iNZ8/oTtHPx9/cc2ILxQ+u905qIwdpULaqDkyBKgOaB57QTMg7ztg8Jm2Og=="
crossorigin=""></script>
<script>
// First we’ll initialize the map and set its view to our chosen geographical coordinates and a zoom level:
var mymap = L.map('mapid').setView([51.505, -0.09], 13);
// Next we’ll add a tile layer to add to our map, in this case it’s a Mapbox Streets tile layer. Creating a tile layer usually involves setting the URL template for the tile images, the attribution text and the maximum zoom level of the layer.
L.tileLayer('https://api.tiles.mapbox.com/v4/{id}/{z}/{x}/{y}.png?access_token={accessToken}', {
attribution: 'Map data &copy; <a href="https://www.openstreetmap.org/">OpenStreetMap</a> contributors, <a href="https://creativecommons.org/licenses/by-sa/2.0/">CC-BY-SA</a>, Imagery © <a href="https://www.mapbox.com/">Mapbox</a>',
maxZoom: 18,
id: 'mapbox.streets',
accessToken: 'pk.eyJ1Ijoibmljb3JkZXYiLCJhIjoiY2swbWNrNm1tMTI1MjNtbXpwZ2ZpcXJ6eCJ9.nEonoKrNrSnRZa0RpJz6XA' // My mapbox access token
}).addTo(mymap);
// Let’s add a marker:
var marker = L.marker([51.5, -0.09]).addTo(mymap);
// Adding a circle is the same (except for specifying the radius in meters as a second argument), but lets you control how it looks by passing options as the last argument when creating the object:
var circle = L.circle([51.508, -0.11], {
color: 'red',
fillColor: '#f03',
fillOpacity: 0.5,
radius: 500
}).addTo(mymap);
// Adding a polygon is as easy:
var polygon = L.polygon([
[51.509, -0.08],
[51.503, -0.06],
[51.51, -0.047]
]).addTo(mymap);
// Popups are usually used when you want to attach some information to a particular object on a map
marker.bindPopup("<b>Hello world!</b><br>I am a popup.").openPopup();
circle.bindPopup("I am a circle.");
polygon.bindPopup("I am a polygon.");
// You can also use popups as layers (when you need something more than attaching a popup to an object):
var popup = L.popup()
.setLatLng([51.49, -0.1])
.setContent("I am a standalone popup.")
.openOn(mymap); // Here we use openOn instead of addTo because it handles automatic closing of a previously opened popup when opening a new one which is good for usability.
// Every time something happens in Leaflet, e.g. user clicks on a marker or map zoom changes, the corresponding object sends an event which you can subscribe to with a function. It allows you to react to user interaction:
var popup = L.popup();
function onMapClick(e) {
popup
.setLatLng(e.latlng)
.setContent("You clicked the map at " + e.latlng.toString())
.openOn(mymap);
}
mymap.on('click', onMapClick);
</script>
</body>
</html>
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