高德地图 JS API示例-覆盖物- › 通用- ›根据覆盖物调整地图范围

<!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>根据覆盖物调整显示范围</title>
  <link rel="stylesheet" href="https://a.amap.com/jsapi_demos/static/demo-center/css/demo-center.css" />
  <style>
    html,
    body,
    #container {
      width: 100%;
      height: 100%;
    }
  </style>
</head>

<body>
  <div id="container"></div>
  <div class="input-card" style="width:24rem;">
    <h4>根据覆盖物调整显示范围</h4>
    <div class="input-item">
      <button class="btn" id="fitblue" style="margin-right:1rem;">自适应蓝色标记</button>
      <button class="btn" id="fitall">自适应所有标记</button>
    </div>
  </div>

  <script src="https://webapi.amap.com/maps?v=1.4.15&key=您申请的key值"></script>
  <script src="https://a.amap.com/jsapi_demos/static/demo-center/js/demoutils.js"></script>
  <script>
    //创建地图
    var map = new AMap.Map('container', {
      resizeEnable: true,
      zoom: 10,
      center: [116.405285, 39.904989]
    });

    // 创建两个点标记
    var m1 = new AMap.Marker({
      position: [116.49, 39.9]
    });
    var m2 = new AMap.Marker({
      position: [116.29, 39.9]
    });
    var m3 = new AMap.Marker({
      position: [116.69, 39.9],
      icon: "https://webapi.amap.com/theme/v1.3/markers/n/mark_r.png"
    });

    map.add(m1);
    map.add(m2);
    map.add(m3);

    //自动适配到指定视野范围
    document.querySelector("#fitblue").onclick = function(){
      map.setFitView([m1, m2]);
    }

    //无参数时，自动自适应所有覆盖物
    document.querySelector("#fitall").onclick = function(){
      map.setFitView();
    }
  </script>
</body>

</html>

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