標記在谷歌地圖

Question

我目前加載與以下JavaScript地圖。

google.load("maps", "2.x"); 

    // Call this function when the page has been loaded 
    function initialize() { 

    var map = new google.maps.Map2(document.getElementById("map")); 
    map.setCenter(new google.maps.LatLng(52,-3), 13); 

    var point = new google.maps.LatLng(52,-3); 
    var marker = new google.maps.Marker(point, {draggable: true}); 


    map.addOverlay(marker); 

    google.maps.Event.addListener(marker, "dragend", function(latlng) { 
    marker.openInfoWindowHtml("Dragged to <br>" + latlng); 
    });  
    } 

google.setOnLoadCallback(initialize); 

後來，我想其他標記添加到地圖中，用戶輸入後（緯度，經度）對我如何可以訪問我的功能initialize創建map變量？

Answer 1

只是初始化地圖變量初始化函數之外：

google.load("maps", "2.x"); 

var map; 

// Call this function when the page has been loaded 
function initialize() { 

    map = new google.maps.Map2(document.getElementById("map")); 
    map.setCenter(new google.maps.LatLng(52,-3), 13); 

    var point = new google.maps.LatLng(52,-3); 
    var marker = new google.maps.Marker(point, {draggable: true}); 

    map.addOverlay(marker); 

    google.maps.Event.addListener(marker, "dragend", function(latlng) { 
    marker.openInfoWindowHtml("Dragged to <br>" + latlng); 
    });  
} 

google.setOnLoadCallback(initialize); 

//Now you can access the map variable anywhere in your code. 

Answer 2

從來沒有使用谷歌地圖，但嘗試創建全局，並把它傳遞到初始化要使用它每一次。

google.load("maps", "2.x"); 

var map = new google.maps.Map2(document.getElementById("map")); 

function initialize(map,lat,lon) { 

    map.setCenter(new google.maps.LatLng(lat,lon), 13); 

    var point = new google.maps.LatLng(lat,lon); 
    var marker = new google.maps.Marker(point, {draggable: true}); 


    map.addOverlay(marker); 

    google.maps.Event.addListener(marker, "dragend", function(latlng) { 
    marker.openInfoWindowHtml("Dragged to <br>" + latlng); 
    }); 

    return map 
} 

google.setOnLoadCallback(initialize(map,lat,lon));