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Promises | Maps JavaScript API

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Asynchronous methods throughout Google Maps JavaScript API return Promises.

See this guide on using Promises or the examples below for making asynchronous method calls with Google Maps JavaScript API.

The await operator is used to wait for a Promise. It can only be used inside an async function.

const app = async () => {
  const elevationService = google.maps.ElevationService();
  const locations = [{lat: 27.986065, lng:86.922623}];

  const response = await elevationService.getElevationForLocation({locations});
  console.log(response.results);
};

app();

The Promise object has then, catch, and finally methods that take callback functions.

const elevationService = google.maps.ElevationService();
const locations = [{lat: 27.986065, lng:86.922623}];

const promise = elevationService.getElevationForLocation({locations});

promise
    .then((response) => {
      console.log(response.results);
    })
    .catch((error) => {
      console.log(error);
    });
    .finally(() => {
      console.log('done');
    });

The callback pattern is still valid and supported.

const elevationService = google.maps.ElevationService();
const locations = [{lat: 27.986065, lng:86.922623}];

const callback = (results, status) => {
  if (status === 'OK') {
    console.log(results);
  } else {
    // handle this case
  }
};

elevationService.getElevationForLocation({locations}, callback);

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 2025-07-09 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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-07-09 UTC."],[[["Asynchronous methods within the Google Maps JavaScript API predominantly return Promises for efficient handling of operations."],["Numerous Google Maps services, including Directions, Distance Matrix, Elevation, Geocoder, and Streetview, utilize Promises in their methods."],["Developers can employ async/await, then/catch/finally, or traditional callbacks to manage asynchronous operations and responses effectively."],["While Places generally do not utilize Promises, the `getPlacePredictions()` method within the Places AutocompleteService does offer partial Promise support."],["Beginning in 2020, all newly introduced APIs within the Google Maps JavaScript API exclusively support Promises for asynchronous operations."]]],[]]

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