heatmap.html

<!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>热力图</title>
    <link rel="stylesheet" href="https://a.amap.com/jsapi_demos/static/demo-center/css/demo-center.css" />
    <script src="https://webapi.amap.com/maps?v=2.0&key=54eee28eafdd3487fba880c4961901cd"></script>
    <script src="heatmapData.js"></script>
    <style>
        html,
        body,
        #container {
            margin: 0;
            padding: 0;
            width: 100%;
            height: 100%;
        }
    </style>
</head>

<body>
    <div id="container"></div>
    <script>
        var map = new AMap.Map("container", {
            resizeEnable: true,
            center: [113.88311, 22.55371],
            zoom: 11
        });

        if (!isSupportCanvas()) {
            alert('热力图仅对支持canvas的浏览器适用,您所使用的浏览器不能使用热力图功能,请换个浏览器试试~')
        }
        var heatmap;
        map.plugin(["AMap.HeatMap"],
            function () {
                //初始化heatmap对象
                heatmap = new AMap.HeatMap(map, {
                    radius: 35, //给定半径
                    opacity: [0, 0.8]
                });
                //设置数据集
                heatmap.setDataSet({
                    data: heatmapData,
                    max: 100
                });
            });
        //判断浏览器是否支持canvas
        function isSupportCanvas() {
            var elem = document.createElement('canvas');
            return !!(elem.getContext && elem.getContext('2d'));
        }
    </script>
</body>

</html>