Arrangement of js functions encountered in the use of Baidu map in javascript development

This article mainly introduces the javascript development of Baidumap used jsfunction related information compiled, required Friends can refer to

Javascript development of Baidu map using js functions to organize

The map used in the project. The customer requested to use Baidu Map, so I had no choice but to use it. Baidu Map, here is a summary, some functions written, Comments are more detailed!

   //创建和初始化地图函数： 
    
    function initMap(){ 
     createMap();//创建地图 
     setMapEvent();//设置地图事件 
     addMapControl();//向地图添加控件 
     addMarker();//向地图中添加marker 
    } 
     
    //创建地图函数： 
    function createMap(){ 
     var map = new BMap.Map("container");//在百度地图容器中创建一个地图 
     var point = new BMap.Point(116.395645,39.929986);//定义一个中心点坐标 
     map.centerAndZoom(point,12);//设定地图的中心点和坐标并将地图显示在地图容器中 
     window.map = map;//将map变量存储在全局 
    } 
     
    //地图事件设置函数： 
    function setMapEvent(){ 
     map.enableDragging();//启用地图拖拽事件，默认启用(可不写) 
     map.enableScrollWheelZoom();//启用地图滚轮放大缩小 
     map.enableDoubleClickZoom();//启用鼠标双击放大，默认启用(可不写) 
     map.enableKeyboard();//启用键盘上下左右键移动地图 
    } 
  
    //地图控件添加函数： 
    function addMapControl(){ 
      //向地图中添加缩放控件 
     var ctrl_nav = new BMap.NavigationControl({anchor:BMAP_ANCHOR_TOP_LEFT,type:BMAP_NAVIGATION_CONTROL_LARGE}); 
     map.addControl(ctrl_nav); 
      //向地图中添加缩略图控件 
     var ctrl_ove = new BMap.OverviewMapControl({anchor:BMAP_ANCHOR_BOTTOM_RIGHT,isOpen:1}); 
     map.addControl(ctrl_ove); 
      //向地图中添加比例尺控件 
     var ctrl_sca = new BMap.ScaleControl({anchor:BMAP_ANCHOR_BOTTOM_LEFT}); 
     map.addControl(ctrl_sca); 
    } 
     
    //标注点数组 
    var markerArr = [{title:"我的标记",content:"我的备注",point:"116.354539|39.970253",isOpen:0,icon:{w:21,h:21,l:0,t:0,x:6,lb:5}} 
      ]; 
    //创建marker 
    function addMarker(){ 
     for(var i=0;i<markerArr.length;i++){ 
      var json = markerArr[i]; 
      var p0 = json.point.split("|")[0]; 
      var p1 = json.point.split("|")[1]; 
      var point = new BMap.Point(p0,p1); 
      var iconImg = createIcon(json.icon); 
      var marker = new BMap.Marker(point,{icon:iconImg}); 
      var iw = createInfoWindow(i); 
      var label = new BMap.Label(json.title,{"offset":new BMap.Size(json.icon.lb-json.icon.x+10,-20)}); 
      marker.setLabel(label); 
       
      map.addOverlay(marker); 
      label.setStyle({ 
         borderColor:"#808080", 
         color:"#333", 
         cursor:"pointer" 
      }); 
      (function(){ 
       var index = i; 
       var _iw = createInfoWindow(i); 
       var _marker = marker; 
       _marker.addEventListener("click",function(){ 
        this.openInfoWindow(_iw); 
       }); 
       _iw.addEventListener("open",function(){ 
        _marker.getLabel().hide(); 
       }) 
       _iw.addEventListener("close",function(){ 
        _marker.getLabel().show(); 
       }) 
       label.addEventListener("click",function(){ 
        _marker.openInfoWindow(_iw); 
       }) 
       if(!!json.isOpen){ 
        label.hide(); 
        _marker.openInfoWindow(_iw); 
       } 
      })() 
     } 
    } 
    //创建InfoWindow 
    function createInfoWindow(i){ 
     var json = markerArr[i]; 
     var iw = new BMap.InfoWindow("<b class=&#39;iw_poi_title&#39; title=&#39;" + json.title + "&#39;>" + json.title + "</b><p class=&#39;iw_poi_content&#39;>"+json.content+"</p>"); 
     return iw; 
    } 
    //创建一个Icon 
    function createIcon(json){ 
     var icon = new BMap.Icon("http://openapi.baidu.com/map/images/us_mk_icon.png", new BMap.Size(json.w,json.h),{imageOffset: new BMap.Size(-json.l,-json.t),infoWindowOffset:new BMap.Size(json.lb+5,1),offset:new BMap.Size(json.x,json.h)}) 
     return icon; 
    } 
     
 initMap();//创建和初始化地图

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