Finding the lat-long of the corners in a Google Maps window

问题

Using the Google Maps API, how can I get the latitude and longitude of the corners of the map display area?

That is, if my map is 300px wide and 400px tall, how can I find the lat-long of the points at (0,0) and (300,400)?

回答1:

Use getBounds(). From the doc:

Returns the the visible rectangular region of the map view in geographical coordinates.

That function returns exactly what you want: the southwest and northeast corners of your map. The first pair of coordinates are the lower left (southwest) coordinates and the second pair is the upper right (northeast) coordinates.

来源：https://stackoverflow.com/questions/1083472/finding-the-lat-long-of-the-corners-in-a-google-maps-window