Introduction:

This tutorial will help you learn about the basics of Google Maps. The simple map is created using JavaScript mentioning the longitude and the latitude of the required area.

Code:

let map: google.maps.Map;

function initMap(): void {
  map = new google.maps.Map(document.getElementById("map") as HTMLElement, {
    center: { lat: -34.397, lng: 150.644 },
    zoom: 8,
  });
}

declare global {
  interface Window {
    initMap: () => void;
  }
}
window.initMap = initMap;
export {};

Explanation:

• This example creates a map that’s centered on Sydney, New South Wales, Australia.

  

• The first line of the code i.e., Object.defineProperty(exports, “__esModule”, { value: true }); helps to correctly import a default export in CommonJS/AMD/UMD module format.
• The variable ‘map’ defines the properties of the map.

  let map: google.maps.Map;
  

• The function initMap() is created to set the map properties.
• The line below line creates a new map inside the <div> element with the help of the mentioned id which is ‘map’ along with the passed parameters i.e., ‘map.’

  map = new google.maps.Map(document.getElementById("map")
  

• The ‘centre’ attribute defines where the map should be centered with the help of the latitude and longitude coordinates).

  center: { lat: -34.397, lng: 150.644 }
  

• The ‘zoom’ attribute specifies the map’s zoom level.

  zoom: 8
  

Note: The initMap is a callback function; it’s the function that will be executed after the Google Maps API Asynchronous Script loads.

window.initMap = initMap;

Conclusion:

This example creates a map that’s centered on Sydney, New South Wales, Australia. Thus, by changing the longitude and latitude of the coordinates you can get any area’s map.

Live Example