// This example creates draggable triangles on the map.
// Note also that the red triangle is geodesic, so its shape changes
// as you drag it north or south.
function initMap(): void {
const map = new google.maps.Map(
document.getElementById("map") as HTMLElement,
{
zoom: 1,
center: { lat: 24.886, lng: -70.268 },
mapTypeId: "terrain",
}
);
const blueCoords = [
{ lat: 25.774, lng: -60.19 },
{ lat: 18.466, lng: -46.118 },
{ lat: 32.321, lng: -44.757 },
];
const redCoords = [
{ lat: 25.774, lng: -80.19 },
{ lat: 18.466, lng: -66.118 },
{ lat: 32.321, lng: -64.757 },
];
// Construct a draggable red triangle with geodesic set to true.
new google.maps.Polygon({
map,
paths: redCoords,
strokeColor: "#FF0000",
strokeOpacity: 0.8,
strokeWeight: 2,
fillColor: "#FF0000",
fillOpacity: 0.35,
draggable: true,
geodesic: true,
});
// Construct a draggable blue triangle with geodesic set to false.
new google.maps.Polygon({
map,
paths: blueCoords,
strokeColor: "#0000FF",
strokeOpacity: 0.8,
strokeWeight: 2,
fillColor: "#0000FF",
fillOpacity: 0.35,
draggable: true,
geodesic: false,
});
}
declare global {
interface Window {
initMap: () => void;
}
}
window.initMap = initMap;Note: Read the guide on using TypeScript and Google Maps. JavaScript
// This example creates draggable triangles on the map.
// Note also that the red triangle is geodesic, so its shape changes
// as you drag it north or south.
function initMap() {
const map = new google.maps.Map(document.getElementById("map"), {
zoom: 1,
center: { lat: 24.886, lng: -70.268 },
mapTypeId: "terrain",
});
const blueCoords = [
{ lat: 25.774, lng: -60.19 },
{ lat: 18.466, lng: -46.118 },
{ lat: 32.321, lng: -44.757 },
];
const redCoords = [
{ lat: 25.774, lng: -80.19 },
{ lat: 18.466, lng: -66.118 },
{ lat: 32.321, lng: -64.757 },
];
// Construct a draggable red triangle with geodesic set to true.
new google.maps.Polygon({
map,
paths: redCoords,
strokeColor: "#FF0000",
strokeOpacity: 0.8,
strokeWeight: 2,
fillColor: "#FF0000",
fillOpacity: 0.35,
draggable: true,
geodesic: true,
});
// Construct a draggable blue triangle with geodesic set to false.
new google.maps.Polygon({
map,
paths: blueCoords,
strokeColor: "#0000FF",
strokeOpacity: 0.8,
strokeWeight: 2,
fillColor: "#0000FF",
fillOpacity: 0.35,
draggable: true,
geodesic: false,
});
}
window.initMap = initMap;Note: The JavaScript is compiled from the TypeScript snippet. 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;
}
HTML
<html>
<head>
<title>Draggable Polygons</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>
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