您已在此页面上多次包含Google Maps API。这可能会导致意外的错误 [英] you have included the Google Maps API multiple times on this page. This may cause unexpected errors

问题描述

使用Google地图时出现两处错误：

1. 警告：您已在此页面上多次包含Google Maps API。这可能会导致意想不到的错误。


2. a为空（main.js）
   
   
   

   不知道这两者之间是否有任何联系，但最终结果是我的页面无法加载地图。

   
   
   

   这里是我的标签：

    < script type =text / javascriptsrc =../ s / Jquery / jquery-1.6.1.min.js >< /脚本> 
   < script type =text / javascriptsrc =../ s / jquery.placeholder.min.js>< / script> 
   < script type =text / javascriptsrc =../ s / index.js>< / script> 
   < script type =text / javascriptsrc =../ s / Jquery / ui / jquery.ui.core.js>< / script> 
   < script type =text / javascriptsrc =../ s / Jquery / ui / jquery.ui.widget.js>< / script> 
    
   < script type =text / javascriptsrc =../ s / Jquery / ui / jquery.ui.position.js>< / script> 
   < script type =text / javascriptsrc =../ s / Jquery / ui / jquery.ui.autocomplete.js>< / script> 
   < script src =../ dd / markerclusterer_compiled.jstype =text / javascript>< / script>< script src =../ dd / dealers_js.jstype = text / javascript>< / script>< script type =text / javascriptsrc =http://maps.google.com/maps/api/js?sensor=false>< /脚本> 
     

   这里是我称之为谷歌地图的功能：

    函数set_google_map（set_region）
    {
    
    var zoom; 
    var center; 
    switch（set_region）{
    caseusa：
    zoom = 3; 
    center = new google.maps.LatLng（37.09，-95.71）; 
   休息; 
    caseeurope：
    zoom = 3; 
    center = new google.maps.LatLng（48.58，7.71）; 
   休息; 
    caseeast：
    zoom = 3; 
    center = new google.maps.LatLng（31，121）; 
   休息; 
   默认值：
    zoom = 1; 
    center = new google.maps.LatLng（35，5）; 
   } 
    //创建地图
    map = new google.maps.Map（document.getElementById（'map'），options）; 
    google.maps.event.addListener（map，'click'，function（）{
    clean_icons（）; 
    if（infowindow）
    infowindow.close（）; 
   }）; 
    map.setCenter（center）; 
    map.setZoom（zoom）; 
    
    
    // bounds = new google.maps.LatLngBounds（）; 
   } 
     

   以下是我的变数：
   
   

     var UseridEncr; 
    var super_category =ATE; 
    var infowindow; 
    var map; 
    var bounds; 
    var image =../ dd / i / green.png; 
    var image_active =../ dd / i / red.png; 
    var mc; 
    var location_changed = true; 
    var current_region =usa; 
    var mcOptions = {gridSize：30，maxZoom：8}; 
    var last_marker; 
    var last_marker_z; 
    var DealersData; 
    var markers = []; 
    var markers_selected = []; 
    claster_markers = []; 
    var current_view = 0; 
    myData = {}; 
    var selected_items = []; 
    var total_selected = 0; 
     

   感谢您的及时答复。
   

   解决方案

   我遇到了同样类型的问题。如果您的网页包含映射api 超过一次，则会发生这种情况。

   
   
   

   我在我的情况中检查了 .js 也称为 maps api 的文件，因此请先检查您是否包含多次 maps api ，如果您，去掉那个。

   
   

   I get two error when using google map:

   1. Warning: you have included the Google Maps API multiple times on this page. This may cause unexpected errors.
   2. a is null (main.js)

   i don't know if there is any connection between the two, but the final result is that my page cannot load the map.

   here is my head tag:

   <script type="text/javascript" src="../s/Jquery/jquery-1.6.1.min.js"></script>
   <script type="text/javascript" src="../s/jquery.placeholder.min.js"></script>
   <script type="text/javascript" src="../s/index.js"></script>
   <script type="text/javascript" src="../s/Jquery/ui/jquery.ui.core.js"></script>
   <script type="text/javascript" src="../s/Jquery/ui/jquery.ui.widget.js"></script>
   
   <script type="text/javascript" src="../s/Jquery/ui/jquery.ui.position.js"></script>
   <script type="text/javascript" src="../s/Jquery/ui/jquery.ui.autocomplete.js"></script>
   <script src="../dd/markerclusterer_compiled.js" type="text/javascript"></script><script src="../dd/dealers_js.js" type="text/javascript"></script><script type="text/javascript" src="http://maps.google.com/maps/api/js?sensor=false"></script>
   

   here is the function which i call the google map:

   function set_google_map(set_region)
   {
   
           var zoom;
           var center;
           switch (set_region) {
               case "usa":
                   zoom = 3;
                   center = new google.maps.LatLng(37.09, -95.71);
                   break;
               case "europe":
                   zoom = 3;
                   center = new google.maps.LatLng(48.58, 7.71);
                   break;
               case "east":
                   zoom = 3;
                   center = new google.maps.LatLng(31, 121);
                   break;
               default:
                   zoom = 1;
                   center = new google.maps.LatLng(35, 5);
           }
           // Creating the map  
           map = new google.maps.Map(document.getElementById('map'), options);
           google.maps.event.addListener(map, 'click', function(){
               clean_icons();
               if (infowindow) 
                   infowindow.close();
           });
           map.setCenter(center);
           map.setZoom(zoom);
   
   
               //bounds = new google.maps.LatLngBounds();  
   }
   

   these are my variables:

   var UseridEncr;
   var super_category="ATE";
   var infowindow;
   var map;
   var bounds;
   var image="../dd/i/green.png";
   var image_active="../dd/i/red.png";
   var mc ;
   var location_changed=true;
   var current_region="usa";
   var mcOptions = {gridSize:30, maxZoom: 8};
   var last_marker;
   var last_marker_z;
   var DealersData ;
   var markers=[];
   var markers_selected=[];
   claster_markers=[];
   var current_view=0;
   myData={};
   var selected_items=[];
   var total_selected=0;
   

   thanks for your prompt answer.

   解决方案

   I faced the same type of problem. This occurs if your web page including maps api more than one time.

   I have checked in my case there was a .js file that was also calling maps api, so please first check if you are including maps api more than one time, if you are, remove the one.

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