[問題] Google Map API 上的W3C的用法???

[brandonron (假嗨)]

這是我看Google Map API V3時候，看到網路上有人利用這方式寫了位置偵測
底下是Google 提供的方法
var initialLocation;
var siberia = new google.maps.LatLng(60, 105);
var newyork = new google.maps.LatLng(40.69847032728747, -73.9514422416687);
var browserSupportFlag =  new Boolean();

function initialize() {
  var myOptions = {
    zoom: 6,
    mapTypeId: google.maps.MapTypeId.ROADMAP
  };
  var map = new google.maps.Map(document.getElementById("map-canvas"),
myOptions);

  // Try W3C Geolocation (Preferred)
  if(navigator.geolocation) {
    browserSupportFlag = true;
    navigator.geolocation.getCurrentPosition(function(position) {
      initialLocation = new
google.maps.LatLng(position.coords.latitude,position.coords.longitude);
      map.setCenter(initialLocation);
    }, function() {
      handleNoGeolocation(browserSupportFlag);
    });
  }
  // Browser doesn't support Geolocation
  else {
    browserSupportFlag = false;
    handleNoGeolocation(browserSupportFlag);
  }

  function handleNoGeolocation(errorFlag) {
    if (errorFlag == true) {
      alert("Geolocation service failed.");
      initialLocation = newyork;
    } else {
      alert("Your browser doesn't support geolocation. We've placed you in
Siberia.");
      initialLocation = siberia;
    }
    map.setCenter(initialLocation);
  }
}
---------------------------------------------------------------------------
這是網路上有人的做法
var browserSupportFlag =  new Boolean();

function getCurrentLocation() {
  var array1 = new Array(23.56935, 120.49416);
  // Try W3C Geolocation (Preferred)
  if(navigator.geolocation) {
    browserSupportFlag = true;
    navigator.geolocation.getCurrentPosition(function(position) {
      array1 = [position.coords.latitude, position.coords.longitude];
    }, function() {
      handleNoGeolocation(browserSupportFlag);
    });
  // Try Google Gears Geolocation
  } else if (google.gears) {
    browserSupportFlag = true;
    var geo = google.gears.factory.create('beta.geolocation');
    geo.getCurrentPosition(function(position) {
          array1 = [position.latitude,position.longitude];
    }, function() {
      handleNoGeoLocation(browserSupportFlag);
    });
  // Browser doesn't support Geolocation
  } else {
    browserSupportFlag = false;
    handleNoGeolocation(browserSupportFlag);
  }
  return array1;
}

  function handleNoGeolocation(errorFlag) {
    if (errorFlag == true) {
      alert("Geolocation service failed.");
    } else {
      alert("Test OK");
    }
  }
-----------------------------------------------------------------------------
裡面我看不懂一些地方，希望有人人解說一下
網友的寫法把經緯度宣告在array1內→23.56935, 120.49416
 geo.getCurrentPosition(function(position) {
          array1 = [position.latitude,position.longitude];
    }
我一直不了解這段程式碼的 position.latitude指向array1的23.5936，而position.longitude是指120.49416 ??

原本我要依我手機的經緯度(或我輸入的值)來指定位置，但是雖然有定位到
但是Center一直都不會移到我輸入的值的位置上,我也覺得滿奇怪的
------------------------------------------------------------------
這是插入的程式碼
Var lat = Android.GetLat();
Var lon = Android.GetLon();
Var array1 = new Array(lat,lon)

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→ brandonron:var browserSupportFlag =  new Boolean(); 的功能是?
→ brandonron:我知道rowserSupportFlag =  new Boolean()了