Question

I’m having a problem with showing my markers. I successfully hide them in an array but I’m having problems on showing them back here is my code.

   function filtermark(){
 for (var i = 0; i < markersArray.length; i++ ) {
markersArray[i].setMap(null);
    }
    }
   function showmark(){
 for (var i = 0; i < markersArray.length; i++ ) {
markersArray[i].setMap(map);
    }
    }

Answer 1

Looking at the code you posted in your earlier question, your map variable is local to your load function. It probably needs to be global.

var map;
function load() {
  map = new google.maps.Map(...)