javascript - set_at called multiple times in Google Maps V3 API - 


poly = new google.maps.polyline(polyoptions); poly.setmap(map);  google.maps.event.addlistener(map, 'click', addlatlng);  function addlatlng(event) {      var path = poly.getpath();      // because path mvcarray, can append new coordinate     // , automatically appear     path.push(event.latlng);      // add new marker @ new plotted point on polyline.     var marker = new google.maps.marker({         position: event.latlng,         title: '#' + path.getlength(),         map: map,         dragable: false,         clickable: true,         name: name,         raiseondrag: false,     });      //this event fired when setat() called. event passes index passed setat() , element in array @ index.     google.maps.event.addlistener(path, 'set_at', function(index,oldwp) {                            //called when editing path         //we need remove (current) marker , add new 1 @ position      });      google.maps.event.addlistener(path, 'insert_at', function(index) {         //when insert happens not @ end of path somewhere in middle         //we need rerender makers       }); }

google documentation: this event fired when setat() called. event passes index passed setat() , element in array @ index.

however event called x times (where x # elem of path).

anybody know why , if can prevented (asside keeping counter in memory).

what doing here adding new listeners path each time path changes. want add listeners once. think should trick:

poly = new google.maps.polyline(polyoptions); poly.setmap(map); var path = poly.getpath();  google.maps.event.addlistener(map, 'click', addlatlng);  function addlatlng(event) {      // because path mvcarray, can append new coordinate     // , automatically appear     path.push(event.latlng);      // add new marker @ new plotted point on polyline.     var marker = new google.maps.marker({         position: event.latlng,         title: '#' + path.getlength(),         map: map,         dragable: false,         clickable: true,         name: name,         raiseondrag: false,     }); }   //this event fired when setat() called. event passes index passed setat() , element in array @ index. google.maps.event.addlistener(path, 'set_at', function(index,oldwp) {                        //called when editing path     //we need remove (current) marker , add new 1 @ position  });  google.maps.event.addlistener(path, 'insert_at', function(index) {     //when insert happens not @ end of path somewhere in middle     //we need rerender makers   });

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