百度地图API的自动定位路线查询

时间 2019-12-11
原文原文链接
功能以下：打开时自动定位到当前位置（浏览器可能会屏蔽自动定位功能，建议手机查看，或直接打开地址：http://1.jingcode.applinzi.com/test2.html），输入目的地点击搜索后，显示当前位置和目的地之间的线路图。<!DOCTYPE html><html><head>   <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />   <meta name="viewport" content="initial-scale=1.0, user-scalable=no" />   <style type="text/css">   body, html {width: 100%;height: 100%;overflow: hidden;margin:0;font-family:"微软雅黑";}   #allmap{width: 100%;height: 100%;overflow: hidden;margin:0;font-family:"微软雅黑";}   header{margin: 5px auto;font-size: 16px;}   .typein{width: 90px;height: 16px;font-size: 16px;}   /*.btn{color:#fff;height: 25px;}*/   </style>   <script type="text/javascript" src="http://api.map.baidu.com/api?v=2.0&ak=6VArBpbbbMjBVP22TflHkpSq"></script>   <script type="text/javascript" src="http://developer.baidu.com/map/jsdemo/demo/convertor.js"></script>     <title>路线查询</title></head><body>   <header>      <label for="start">起点:<input type="text" placeholder="请输入起点" class="typein" id="start"/></label>      <label for="zhongdian">终点:<input type="text" id="zhongdian" placeholder="请输入终点" class="typein"/></label>      <input type="button" class="btn" id="result" value="查询" onclick="chaxun()"/>   </header>   <div id="allmap"></div></body></html><script type="text/javascript">   var map = new BMap.Map("allmap");   var lng , lat ;   var geolocation = new BMap.Geolocation();   geolocation.getCurrentPosition(function(r){      if(this.getStatus() == BMAP_STATUS_SUCCESS){                  //map.panTo(r.point);         lng = r.point.lng;         lat = r.point.lat         //alert('您的位置：'+r.point.lng+','+r.point.lat);         map.centerAndZoom(new BMap.Point(lng, lat), 18);         var mk = new BMap.Marker(r.point);         map.addOverlay(mk);         map.addControl(new BMap.MapTypeControl());   //添加地图类型控件         map.enableScrollWheelZoom(true);     //开启鼠标滚轮缩放      }      else {         alert('failed'+this.getStatus());      }           });   function chaxun(){      map.clearOverlays();       var zhongdian = document.getElementById("zhongdian").value;      var qidian = document.getElementById("start").value;      //从定位地点到终点      //search(new BMap.Point(lng, lat),zhongdian,BMAP_DRIVING_POLICY_LEAST_DISTANCE);      //从输入的起点到终点      search(qidian,zhongdian,BMAP_DRIVING_POLICY_LEAST_DISTANCE);      function search(start,end,route){          var driving = new BMap.DrivingRoute(map, {renderOptions:{map: map, autoViewport: true},policy: route});         driving.search(start,end);      }   }</script>