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JavaScript Using the Geolocation API in JavaScript

chris ingvartsen
PLUS
chris ingvartsen
Courses Plus Student 52 Points
Posted by chris ingvartsen
chris ingvartsen
Courses Plus Student 52 Points

How do i sort location by nearest?

If i were to save the lat and lon values in a SQL database and foreach over them to return the locations. How would i order them by nearest? I cant figure this out!

1 Answer

Steven Parker
Steven Parker
231,261 Points
Steven Parker
Steven Parker
231,261 Points

I"m not sure how SQL comes into this, but if you're using "forEach" it sounds like you're working with an array. In that case, you could use the ".sort()" method with a custom compare function.

Your compare function could use the standard formula for distance calculation (sqrt(deltax**2 + deltay**2)) and then subtract the distances to create the sorting order.