获取json数据后在 地图上打点,根据 json不断移动点的位置

2018-4-10 释然 前端技术资源

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<?php echo <<<_END <!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>点标记</title>
    <link rel="stylesheet" href="http://cache.amap.com/lbs/static/main1119.css"/>
    <style>
        .marker {
            color: #ff6600; padding: 4px 10px;
            border: 1px solid #fff; white-space: nowrap;
            font-size: 12px;
            font-family: "";
            background-color: #0066ff;  } </style>
    <script src="http://webapi.amap.com/maps?v=1.3&key=您申请的key值"></script>
    <script type="text/javascript" src="http://cache.amap.com/lbs/static/addToolbar.js"></script>
</head>
<body>
<div id="container"></div>
<script> var marker, map = new AMap.Map("container", {
        resizeEnable: true, center: [126.60580555556, 45.702363888889], zoom: 13 }); var getJSON = function(url) { return new Promise(function(resolve, reject) { var xhr = new XMLHttpRequest();
        xhr.open('get', url, true);
        xhr.responseType = 'json';
        xhr.onload = function() { var status = xhr.status; if (status == 200) {
            resolve(xhr.response);
          } else {
            reject(status);
          }
        };
        xhr.send();
      });
    };

    getJSON('http://web.cellpies.com/api/driving/getVehicleLocationPoints?vehicleDeviceId=0400000000030603&timeType=4&startTime=2017-03-17%2013:00:00&stopTime=2017-03-17%2014:00:00').then(function(jdata) { //alert('Your Json result is:  ' + jdata); //you can comment this, i used it to debug
        //alert(jdata.data[0].gpsx);
        //alert(jdata.data[0].gpsy); window.i=0; //addMarker(jdata.data[i].gpsx,jdata.data[i].gpsy); setInterval(function () { addMarker(jdata.data[window.i].gpsx,jdata.data[window.i].gpsy); },"1000");
       
    }, function(status) { //error detection.... alert('Something went wrong.');
    }); // 实例化点标记 function addMarker(v1,v2) {
     
     window.i+=10;
        marker = new AMap.Marker({
            icon: "http://webapi.amap.com/theme/v1.3/markers/n/mark_b.png", position: [v1,v2]
        });
        marker.setMap(map);
    } </script>
</body>
</html>

</script>
</body>
</html> _END; ?>

效果图

-----------------------------------------------------------------------更新---------------------------------------------------------

去掉连续显示多个点,每次只显示一个点

<?php echo<<<_END <!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>点标记</title>
    <link rel="stylesheet" href="http://cache.amap.com/lbs/static/main1119.css"/>
    <style>
        .marker {
            color: #ff6600; padding: 4px 10px;
            border: 1px solid #fff; white-space: nowrap;
            font-size: 12px;
            font-family: "";
            background-color: #0066ff;  } </style>
    <script src="http://webapi.amap.com/maps?v=1.3&key=您申请的key值"></script>
    <script type="text/javascript" src="http://cache.amap.com/lbs/static/addToolbar.js"></script>
</head>
<body>
<div id="container"></div>
<script> var marker, map = new AMap.Map("container", {
        resizeEnable: true, center: [126.60580555556, 45.702363888889], zoom: 13 }); var getJSON = function(url) { return new Promise(function(resolve, reject) { var xhr = new XMLHttpRequest();
        xhr.open('get', url, true);
        xhr.responseType = 'json';
        xhr.onload = function() { var status = xhr.status; if (status == 200) {
            resolve(xhr.response);
          } else {
            reject(status);
          }
        };
        xhr.send();
      });
    };

    getJSON('http://web.cellpies.com/api/driving/getVehicleLocationPoints?vehicleDeviceId=0400000000030603&timeType=4&startTime=2017-03-17%2013:00:00&stopTime=2017-03-17%2014:00:00').then(function(jdata) {
        addMarker(jdata.data[0].gpsx,jdata.data[0].gpsy);
        window.i=1; //updateMarker(jdata.data[1].gpsx,jdata.data[1].gpsy); setInterval(function () { updateMarker(jdata.data[window.i].gpsx,jdata.data[window.i].gpsy); },"1000");
       
    }, function(status) { //error detection.... alert('Something went wrong.');
    }); // 实例化点标记 function addMarker(v1,v2) {
     
        marker = new AMap.Marker({
            icon: "http://webapi.amap.com/theme/v1.3/markers/n/mark_b.png", position: [v1,v2]
        });
        marker.setMap(map);
    } function updateMarker(v1,v2) { //在地图上更新标记
        // 自定义点标记内容 window.i+=10; var markerContent = document.createElement("div"); // 点标记中的图标 var markerImg = document.createElement("img");
        markerImg.className = "markerlnglat";
        markerImg.src = "http://webapi.amap.com/theme/v1.3/markers/n/mark_r.png";
        markerContent.appendChild(markerImg); // 点标记中的文本 var markerSpan = document.createElement("span");
        markerSpan.className = 'marker';
        markerSpan.innerHTML = "Hi,我换新装备啦!";
        markerContent.appendChild(markerSpan);

        marker.setContent(markerContent); //更新点标记内容 marker.setPosition([v1,v2]); //更新点标记位置  } </script>
</body>
</html>

</script>
</body>
</html> _END; ?>

 

涉及setInterval传参的问题。

发现用addMarker(jdata.data[i].gpsx,jdata.data[i].gpsy);时程序可正常运行,但是将该函数 放到setInterval中后却出现了问题,可通过闭包解决。

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标签: 获取json数据后在 地图上打点 根据 json不断移动点的位置


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