Check if a GoogleMap Canvas element is already idle

There is no documented property that signals the idle-status of the map, but you may implement it on your own.

Assuming you call this right after the initialization of the map:

google.maps.event.addListener (map, 'idle', function(){
           this.lastBounds=this.getBounds();
});

Then you may check if the lastBounds-property is equal to the current bounds of the map:

if (map.lastBounds==map.getBounds()){
    //call function immediately
}else{
    //add listener
}

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