How to Reliably Detect Google Maps Load Completion in Web Applications?

Detecting Google Maps Load Completion

Embedding Google Maps into web applications requires monitoring when it has fully loaded to execute subsequent JavaScript processes. However, the tilesloaded() method, intended for this purpose, has proven unreliable.

Solution: Idle Event Listener

To effectively determine when Google Maps has completely loaded, including tile downloads, implement the following solution:

google.maps.event.addListenerOnce(map, 'idle', function(){
    // Do something only when the map is fully loaded for the first time
});

The "idle" event is fired when the map becomes idle, indicating that all elements, including tile downloads, have either successfully loaded or failed to load. By using addListenerOnce, the code within the closure will be executed exclusively on the first occurrence of the "idle" event, ensuring its reliability.

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