Stay organized with collections Save and categorize content based on your preferences.
This example adds a user-editable rectangle to the map. When the user changes the bounds of the rectangle, an info window pops up displaying the new bounds.
Read the documentation.
TypeScript// This example adds a user-editable rectangle to the map.
// When the user changes the bounds of the rectangle,
// an info window pops up displaying the new bounds.
let rectangle: google.maps.Rectangle;
let map: google.maps.Map;
let infoWindow: google.maps.InfoWindow;
function initMap(): void {
map = new google.maps.Map(document.getElementById("map") as HTMLElement, {
center: { lat: 44.5452, lng: -78.5389 },
zoom: 9,
});
const bounds = {
north: 44.599,
south: 44.49,
east: -78.443,
west: -78.649,
};
// Define the rectangle and set its editable property to true.
rectangle = new google.maps.Rectangle({
bounds: bounds,
editable: true,
draggable: true,
});
rectangle.setMap(map);
// Add an event listener on the rectangle.
rectangle.addListener("bounds_changed", showNewRect);
// Define an info window on the map.
infoWindow = new google.maps.InfoWindow();
}
/** Show the new coordinates for the rectangle in an info window. */
function showNewRect() {
const ne = rectangle.getBounds()!.getNorthEast();
const sw = rectangle.getBounds()!.getSouthWest();
const contentString =
"<b>Rectangle moved.</b><br>" +
"New north-east corner: " +
ne.lat() +
", " +
ne.lng() +
"<br>" +
"New south-west corner: " +
sw.lat() +
", " +
sw.lng();
// Set the info window's content and position.
infoWindow.setContent(contentString);
infoWindow.setPosition(ne);
infoWindow.open(map);
}
declare global {
interface Window {
initMap: () => void;
}
}
window.initMap = initMap;Note: Read the guide on using TypeScript and Google Maps. JavaScript
// This example adds a user-editable rectangle to the map.
// When the user changes the bounds of the rectangle,
// an info window pops up displaying the new bounds.
let rectangle;
let map;
let infoWindow;
function initMap() {
map = new google.maps.Map(document.getElementById("map"), {
center: { lat: 44.5452, lng: -78.5389 },
zoom: 9,
});
const bounds = {
north: 44.599,
south: 44.49,
east: -78.443,
west: -78.649,
};
// Define the rectangle and set its editable property to true.
rectangle = new google.maps.Rectangle({
bounds: bounds,
editable: true,
draggable: true,
});
rectangle.setMap(map);
// Add an event listener on the rectangle.
rectangle.addListener("bounds_changed", showNewRect);
// Define an info window on the map.
infoWindow = new google.maps.InfoWindow();
}
/** Show the new coordinates for the rectangle in an info window. */
function showNewRect() {
const ne = rectangle.getBounds().getNorthEast();
const sw = rectangle.getBounds().getSouthWest();
const contentString =
"<b>Rectangle moved.</b><br>" +
"New north-east corner: " +
ne.lat() +
", " +
ne.lng() +
"<br>" +
"New south-west corner: " +
sw.lat() +
", " +
sw.lng();
// Set the info window's content and position.
infoWindow.setContent(contentString);
infoWindow.setPosition(ne);
infoWindow.open(map);
}
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>Listening to Events</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> Try Sample 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.
git clone -b sample-rectangle-event https://github.com/googlemaps/js-samples.gitcd js-samplesnpm inpm start
Other samples can be tried by switching to any branch beginning with sample-SAMPLE_NAME.
git checkout sample-SAMPLE_NAMEnpm inpm start
Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 4.0 License, and code samples are licensed under the Apache 2.0 License. For details, see the Google Developers Site Policies. Java is a registered trademark of Oracle and/or its affiliates.
Last updated 2025-07-02 UTC.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-07-02 UTC."],[[["This example demonstrates creating a user-editable, draggable rectangle on a Google Map."],["An info window dynamically displays the updated coordinates of the rectangle's northeast and southwest corners as the user adjusts it."],["The sample code utilizes the Google Maps JavaScript API with event listeners and the `Rectangle` class to achieve this functionality."],["You can interact with a live version of this example via JSFiddle or Google Cloud Shell, or clone and run the sample locally using Git and Node.js."]]],[]]
RetroSearch is an open source project built by @garambo | Open a GitHub Issue
Search and Browse the WWW like it's 1997 | Search results from DuckDuckGo
HTML:
3.2
| Encoding:
UTF-8
| Version:
0.7.4