Google Maps API Simple Async Loading

To asynchronously load the Google Maps API without blocking page rendering, specialized JavaScript logic is required rather than simple HTML attributes.

• Standard loading methods, including the async attribute, are often unreliable or cause performance issues across different browsers.
• The most stable solution involves dynamically creating and appending a new <script> element to the document body.
• This script must include a callback parameter, ensuring the map initialization function runs only after the API loads.
• Execution of the map loading function must be tied to the page's complete load event using window.onload or $(window).load().