Geocoding Service

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 =
    "Instructions: 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;
index.ts

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 =
    "Instructions: 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;
index.js

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;
}

style.css

HTML


  
    Geocoding Service

    
    
  
  
    


    
    
  

index.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.git
  cd js-samples
  npm i
  npm start

Other samples can be tried by switching to any branch beginning with sample-SAMPLE_NAME. 

  git checkout sample-SAMPLE_NAME
  npm i
  npm start