json undefined var

所以我想用下面的代碼和json數據來使用Google Maps功能。但我得到錯誤：位置未定義錯誤。我真的不明白爲什麼，因爲我在我的代碼中定義。我是JavaScript新手，有任何建議使此代碼感激。json undefined var

var data = <%=JSON.stringify(Info, null, 2) & vbNewline%>; 

    function initialize() { 
     var center = new google.maps.LatLng(48.404840395764175, 2.6845264434814453); 

    var map = new google.maps.Map(document.getElementById('map'), { 
     zoom: 3, 
     center: center, 
     mapTypeId: google.maps.MapTypeId.ROADMAP 
    }); 

    var markers = []; 
    for (var i = 0; i < 100; i++) { 
     var location = data[i]; 
     var latLng = new google.maps.LatLng(location.latitude, 
      location.longitude); 
     var marker = new google.maps.Marker({ 
     position: latLng 
     }); 
     markers.push(marker); 
    } 
    var markerCluster = new MarkerClusterer(map, markers); 
    } 
    google.maps.event.addDomListener(window, 'load', initialize); 


{ "firstname": "", "lastname": "", "location": { "latitude": "48.4048403957642", "longitude": "2.68452644348145" } } { "firstname": "", "lastname": "", "location": { "latitude": "48.4050236871384", "longitude": "2.68512690051361" } } { "firstname": "", "lastname": "", "location": { "latitude": "48.4048403957642", "longitude": "2.68452644348145" } } { "firstname": "", "lastname": "", "location": { "latitude": "48.7570941168018", "longitude": "2.16670989990234" } } { "firstname": "", "lastname": "", "location": { "latitude": "48.404922961092", "longitude": "2.70020564018949" } } { "firstname": "", "lastname": "", "location": { "latitude": "48.8739279353421", "longitude": "2.32875823974609" } } { "firstname": "", "lastname": "", "location": { "latitude": "48.4048403957642", "longitude": "2.68452644348145" } } { "firstname": "", "lastname": "", "location": { "latitude": "41.0349860434783", "longitude": "28.9774059609177" } }

來源

2012-05-28 Efe

是你的'data'陣列中有100（或更多）的元素？如果不是，當'i'大於'data.length'時，'location'將不確定。 –

因爲我正在測試它，所以暫時沒有。 – Efe

那是你的問題。 [techfoobar的答案]（http://stackoverflow.com/a/10783130/790695）告訴你如何解決它。 –

你或許應該做

for (var i = 0; i < data.length; i++) {

代替

for (var i = 0; i < 100; i++) {

來源

2012-05-28 10:29:32 techfoobar

這解決了它。非常感謝！ – Efe

json undefined var

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