javascript - Polymer: access polymer element objects -

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i have polymer element called his-service:

 <polymer-element name="gis-service" attributes="response url">   <template>     <style>     </style>     <core-ajax id="ajax"       auto       url="{{url}}"       method="get"       contenttype = 'application/json'       on-core-response="{{postsloaded}}"       body="{{body}}"       handleas="xml">     </core-ajax>   </template>   <script>   polymer('gis-service', {     created: function() {       this.response = [];     },     postsloaded: function() {         this.response = [];         this.labels = [];         this.coordinates = [];         x = this.$.ajax.response.getelementsbytagname("customerservicecenterdata");         (i=0;i<x.length;i++) {             if (x[i].getelementsbytagname("language")[0].innerhtml == "en")             {                 this.labels[i] = x[i].getelementsbytagname("label")[0].innerhtml;                 this.coordinates.push({                     lat:x[i].getelementsbytagname("lat")[0].innerhtml,                     lng:x[i].getelementsbytagname("lng")[0].innerhtml                 })             }         }         console.log(this.coordinates);     }   });   </script> </polymer-element>

in index file, try access object labels , coordinates. following part of index:

<gis-service id="gservice" response="{{labels}}" url="someurl"> </gis-service> <script>     var gis_service = document.queryselector('gis-service');     console.log(gis_service); </script>

as can see, trying access labels , coordinates through queryselector. however, when try labels instance via:

gis_service.labels

it gives me undefined. same thing variable coordinates. can see 2 variables when do: console.log(gis_service), cannot access them. appreciated.

define outside of function , should able use externally. format work .8 version. 1.0 version need use new format.

created: function() {        this.response = [];      },  	labels: undefined,      postsloaded: function() {


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