版本：9.4.0
设置地图可视层级

<!DOCTYPE html>
<html>

<head>
    <meta charset="utf-8" />
    <title>设置地图可视层级</title>
    <meta name="viewport" content="initial-scale=1,maximum-scale=1,user-scalable=no" />
    <style>
        body {
            margin: 0;
            padding: 0;
        }

        #map {
            position: absolute;
            top: 0;
            bottom: 0;
            width: 100%;
        }

        .btn-group {
            position: absolute;
            top: 20px;
            left: 20px;
        }
    </style>
    <script src="https://delivery.mapmost.com/cdn/sdk/webgl/v9.4.0/mapmost-webgl-min.js"></script>
</head>

<body>
    <div id="map"></div>
    
    <script>
       let map =  new mapmost.Map({
            container: "map",
            style: "<your style url>",
            center: [120.72541613154851, 31.31171803927643],
            zoom: 12,
            pitch: 60,
            bearing: 20,
            minZoom:10,  // 最小层级
            maxZoom:15,  // 最大层级
            userId: '***', // 授权码
        })
    </script>
</body>

</html>