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高德地图圈出某个区域

2021-07-12 14:02:38 作者：互联网
<!doctype html>
<html>

<head>
  <meta charset="utf-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="initial-scale=1.0, user-scalable=no, width=device-width">
  <title>行政区边界查询</title>
  <link rel="stylesheet" href="https://a.amap.com/jsapi_demos/static/demo-center/css/demo-center.css" />
  <style>
    html,
    body,
    #container {
      margin: 0;
      height: 100%;
    }

    .input-item-text {
      width: 7rem;
    }
  </style>
</head>

<body>
  <div id="container"></div>
  <div class="input-card"> <label style='color:grey'>行政区边界查询</label>
    <div class="input-item">
      <div class="input-item-prepend"> <span class="input-item-text">行政级别</span> </div> <select id="level">
        <option value="district">district</option>
        <option value="city">city</option>
        <option value="province">province</option>
      </select>
    </div>
    <div class="input-item">
      <div class="input-item-prepend"> <span class="input-item-text">名称/adcode</span> </div> <input id='district'
        type="text" value='东阳市'>
    </div> <input id="draw" type="button" class="btn" value="查询" />
  </div>
  <script type="text/javascript" src="https://webapi.amap.com/maps?v=1.4.15&key=yourKeys&plugin=AMap.DistrictSearch">
  </script>
  <script type="text/javascript">
    //初始化地图对象，加载地图    
    var map = new AMap.Map("container", {
      resizeEnable: true,
      center: [120.30, 29.18], //地图中心点   
      mapStyle: 'amap://styles/darkblue', // 使用的自定义地图样式     
      zoom: 10 //地图显示的缩放级别    
    });
    var district = null;
    var polygons = [];
    console.log(map)
    function drawBounds() { //加载行政区划插件      
      if (!district) { //实例化DistrictSearch           
        var opts = {
          subdistrict: 0, //获取边界不需要返回下级行政区              
          extensions: 'all', //返回行政区边界坐标组等具体信息               
          level: 'city' //查询行政级别为 市         
        };
        district = new AMap.DistrictSearch(opts);
        console.log(district)
      } //行政区查询      
      district.setLevel(document.getElementById('level').value)
      district.search(document.getElementById('district').value, function (status, result) {
        console.log(document.getElementById('level').value,document.getElementById('district').value)
        map.remove(polygons) //清除上次结果       
        polygons = [];
        var bounds = result.districtList[0].boundaries;
        console.log(bounds)
        if (bounds) {
          for (var i = 0, l = bounds.length; i < l; i++) { //生成行政区划polygon   
            var polygon = new AMap.Polygon({
              strokeWeight: 1,
              path: bounds[i],
              fillOpacity: 0.1,
              fillColor: '#80d8ff',
              strokeColor: '#0091ea'
            });
            polygons.push(polygon);
          }
        }
        map.add(polygons)
        map.setFitView(polygons); //视口自适应   
      });
    }
    drawBounds();
    // document.getElementById('draw').onclick = drawBounds;
    // document.getElementById('district').onkeydown = function (e) {
    //   if (e.keyCode === 13) {
    //     drawBounds();
    //     return false;
    //   }
    //   return true;
    // };
  </script>
</body>

</html>
标签：圈出,district,bounds,polygons,var,getElementById,某个,document,高德
来源： https://blog.csdn.net/weixin_46544600/article/details/118673284
高德地图 圈出某个区域

高德地图圈出某个区域
