refresh markers - Google Maps JavaScript API v3

Question

i'm refreshing an array of markers every 5 seconds using the setInterval function. I need to compare the two arrays (before/after the refresh) in order to select which markers will be added (or removed) to the map. Is there any efficent way to do it (beyond the classical approach of two chained for loops)?

Deleting all markers before the refresh is automatically closing the infowindow (which is not desirable).

thanks

Answer 1

请参考此讨论JavaScript数组的区别 。我认为Joshaven Potters的答案为您提供了解决方案。