javascript - google maps multiple markers clickevent -


im looping , placing markers, when click marker, respond same value

here code

  for(a=0; < prod.length; a++){         // add marker map     var mylatlng = new google.maps.latlng(prod[a]['lat'],prod[a]['lon']);   var marker = new google.maps.marker({   position: mylatlng,   map: map,   title: prod[a]['name']+" \n"+prod[a]['description'],   icon: image   });           google.maps.event.addlistener(marker, "click", function() {     show_details(a);   });       }

function show_details, has same value

i have looked @ other answers here didnt solve problem.

tipical problem in async programming/scripting. a variable passing, when click event runs, , value of after for loop finishes. should create inner function scope, , save value of a in variable, lives in scope. solution:

 (function(z){     google.maps.event.addlistener(marker, "click", function() {        show_details(z);     });      })(a);

the a variable lives outside callback function too. if modify value of a ( or for loop modify that) , when event handler called, see modified a.

help link: http://robertnyman.com/2008/10/09/explaining-javascript-scope-and-closures/ .


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