This example creates a map along with a text input field and a button. When you click the "geocode" button, the sample sends a geocoding request, then pans the map to the geocoded location.
Read the documentation.
TypeScript
let map: google.maps.Map;
let marker: google.maps.Marker;
let geocoder: google.maps.Geocoder;
let responseDiv: HTMLDivElement;
let response: HTMLPreElement;
function initMap(): void {
map = new google.maps.Map(document.getElementById("map") as HTMLElement, {
zoom: 8,
center: { lat: -34.397, lng: 150.644 },
mapTypeControl: false,
});
geocoder = new google.maps.Geocoder();
const inputText = document.createElement("input");
inputText.type = "text";
inputText.placeholder = "Enter a location";
const submitButton = document.createElement("input");
submitButton.type = "button";
submitButton.value = "Geocode";
submitButton.classList.add("button", "button-primary");
const clearButton = document.createElement("input");
clearButton.type = "button";
clearButton.value = "Clear";
clearButton.classList.add("button", "button-secondary");
response = document.createElement("pre");
response.id = "response";
response.innerText = "";
responseDiv = document.createElement("div");
responseDiv.id = "response-container";
responseDiv.appendChild(response);
const instructionsElement = document.createElement("p");
instructionsElement.id = "instructions";
instructionsElement.innerHTML =
"<strong>Instructions</strong>: Enter an address in the textbox to geocode or click on the map to reverse geocode.";
map.controls[google.maps.ControlPosition.TOP_LEFT].push(inputText);
map.controls[google.maps.ControlPosition.TOP_LEFT].push(submitButton);
map.controls[google.maps.ControlPosition.TOP_LEFT].push(clearButton);
map.controls[google.maps.ControlPosition.LEFT_TOP].push(instructionsElement);
map.controls[google.maps.ControlPosition.LEFT_TOP].push(responseDiv);
marker = new google.maps.Marker({
map,
});
map.addListener("click", (e: google.maps.MapMouseEvent) => {
geocode({ location: e.latLng });
});
submitButton.addEventListener("click", () =>
geocode({ address: inputText.value })
);
clearButton.addEventListener("click", () => {
clear();
});
clear();
}
function clear() {
marker.setMap(null);
responseDiv.style.display = "none";
}
function geocode(request: google.maps.GeocoderRequest): void {
clear();
geocoder
.geocode(request)
.then((result) => {
const { results } = result;
map.setCenter(results[0].geometry.location);
marker.setPosition(results[0].geometry.location);
marker.setMap(map);
responseDiv.style.display = "block";
response.innerText = JSON.stringify(result, null, 2);
return results;
})
.catch((e) => {
alert("Geocode was not successful for the following reason: " + e);
});
}
declare global {
interface Window {
initMap: () => void;
}
}
window.initMap = initMap;
JavaScript
let map;
let marker;
let geocoder;
let responseDiv;
let response;
function initMap() {
map = new google.maps.Map(document.getElementById("map"), {
zoom: 8,
center: { lat: -34.397, lng: 150.644 },
mapTypeControl: false,
});
geocoder = new google.maps.Geocoder();
const inputText = document.createElement("input");
inputText.type = "text";
inputText.placeholder = "Enter a location";
const submitButton = document.createElement("input");
submitButton.type = "button";
submitButton.value = "Geocode";
submitButton.classList.add("button", "button-primary");
const clearButton = document.createElement("input");
clearButton.type = "button";
clearButton.value = "Clear";
clearButton.classList.add("button", "button-secondary");
response = document.createElement("pre");
response.id = "response";
response.innerText = "";
responseDiv = document.createElement("div");
responseDiv.id = "response-container";
responseDiv.appendChild(response);
const instructionsElement = document.createElement("p");
instructionsElement.id = "instructions";
instructionsElement.innerHTML =
"<strong>Instructions</strong>: Enter an address in the textbox to geocode or click on the map to reverse geocode.";
map.controls[google.maps.ControlPosition.TOP_LEFT].push(inputText);
map.controls[google.maps.ControlPosition.TOP_LEFT].push(submitButton);
map.controls[google.maps.ControlPosition.TOP_LEFT].push(clearButton);
map.controls[google.maps.ControlPosition.LEFT_TOP].push(instructionsElement);
map.controls[google.maps.ControlPosition.LEFT_TOP].push(responseDiv);
marker = new google.maps.Marker({
map,
});
map.addListener("click", (e) => {
geocode({ location: e.latLng });
});
submitButton.addEventListener("click", () =>
geocode({ address: inputText.value }),
);
clearButton.addEventListener("click", () => {
clear();
});
clear();
}
function clear() {
marker.setMap(null);
responseDiv.style.display = "none";
}
function geocode(request) {
clear();
geocoder
.geocode(request)
.then((result) => {
const { results } = result;
map.setCenter(results[0].geometry.location);
marker.setPosition(results[0].geometry.location);
marker.setMap(map);
responseDiv.style.display = "block";
response.innerText = JSON.stringify(result, null, 2);
return results;
})
.catch((e) => {
alert("Geocode was not successful for the following reason: " + e);
});
}
window.initMap = initMap;
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;
}
input[type=text] {
background-color: #fff;
border: 0;
border-radius: 2px;
box-shadow: 0 1px 4px -1px rgba(0, 0, 0, 0.3);
margin: 10px;
padding: 0 0.5em;
font: 400 18px Roboto, Arial, sans-serif;
overflow: hidden;
line-height: 40px;
margin-right: 0;
min-width: 25%;
}
input[type=button] {
background-color: #fff;
border: 0;
border-radius: 2px;
box-shadow: 0 1px 4px -1px rgba(0, 0, 0, 0.3);
margin: 10px;
padding: 0 0.5em;
font: 400 18px Roboto, Arial, sans-serif;
overflow: hidden;
height: 40px;
cursor: pointer;
margin-left: 5px;
}
input[type=button]:hover {
background: rgb(235, 235, 235);
}
input[type=button].button-primary {
background-color: #1a73e8;
color: white;
}
input[type=button].button-primary:hover {
background-color: #1765cc;
}
input[type=button].button-secondary {
background-color: white;
color: #1a73e8;
}
input[type=button].button-secondary:hover {
background-color: #d2e3fc;
}
#response-container {
background-color: #fff;
border: 0;
border-radius: 2px;
box-shadow: 0 1px 4px -1px rgba(0, 0, 0, 0.3);
margin: 10px;
padding: 0 0.5em;
font: 400 18px Roboto, Arial, sans-serif;
overflow: hidden;
overflow: auto;
max-height: 50%;
max-width: 90%;
background-color: rgba(255, 255, 255, 0.95);
font-size: small;
}
#instructions {
background-color: #fff;
border: 0;
border-radius: 2px;
box-shadow: 0 1px 4px -1px rgba(0, 0, 0, 0.3);
margin: 10px;
padding: 0 0.5em;
font: 400 18px Roboto, Arial, sans-serif;
overflow: hidden;
padding: 1rem;
font-size: medium;
}
HTML
<html>
<head>
<title>Geocoding Service</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-geocoding-simple 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