javascript - Google Map not being displayed and browser console shows error "GUnload is not defined at onload" though I've mentioned it -


basically i'm trying show multiple places on google map using lat, lon getting fetched database. here code google map.

<%@ page language="c#" autoeventwireup="true" codebehind="map.aspx.cs" inherits="googlemap.map" %> <!doctype html public "-//w3c//dtd xhtml 1.0 transitional//en" "http://www.w3.org/tr/xhtml1/dtd/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" >    <head id="head1" runat="server">       <style>          #map {          height: 600px;          width: 100%;          }       </style>       <title>your data on google map </title>       <link rel="icon" href="data:;base64,ivborwokggo=" />    </head>    <body onload="initialize()" onunload="gunload()">       <script type="text/javascript" src="http://maps.googleapis.com/maps/api/js?key=aizasybiedoq1nt_j6lqm3qnnzgxpbqpawl_4y4"></script>       <div style="height:600px; width:100%;">          <div id="dvmap"></div>       </div>       <script type="text/javascript">          var markers = [          <asp:repeater id="rptmarkers" runat="server">          <itemtemplate>                      {                      "title": '<%# eval("location_no") %>',                      "lat": '<%# eval("latitude") %>',                      "lng": '<%# eval("longitude") %>'                   }          </itemtemplate>          <separatortemplate>              ,          </separatortemplate>          </asp:repeater>          ];       </script>       <script type="text/javascript">          window.onload = function () {              var mapoptions = {                  center: new google.maps.latlng(markers[0].lat, markers[0].lng),                  zoom: 8,                  maptypeid: google.maps.maptypeid.roadmap              };              var infowindow = new google.maps.infowindow();              var map = new google.maps.map(document.getelementbyid("dvmap"), mapoptions);              (i = 0; < markers.length; i++) {                  var data = markers[i]                  var mylatlng = new google.maps.latlng(data.lat, data.lng);                  var marker = new google.maps.marker({                      position: mylatlng,                      map: map,                      title: data.title                  });                  (function (marker, data) {                      google.maps.event.addlistener(marker, "click", function (e) {                          infowindow.setcontent(data.description);                          infowindow.open(map, marker);                      });                  })(marker, data);              }          }       </script>    </body> </html>

and when run program there blank page no error on console. when refresh page error on console mentioned in question. can here? thank in advance.


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