地图移动相关事件

绑定和解绑 Map 的 movestart、mapmove 等地图移动相关事件。

源代码编辑器

<!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>事件系统</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="info">
    <h4 id="text"></h4>
    <p>当前中心点：<span id="map-center">121.498586,31.239637</span></p>
</div>
<div class="input-card" style="width:16rem">
    <h4>地图移动事件</h4>
    <div>
      <div class="input-item">
        <button id="moveOn" class="btn" style="margin-right:1rem;">绑定事件</button>
        <button id="moveOff" class="btn">解绑事件</button>
      </div>
    </div>
</div>
<div id="tip"></div>
<script type="text/javascript" src="https://webapi.amap.com/maps?v=2.0&key=您申请的key值"></script>
<script src="https://a.amap.com/jsapi_demos/static/demo-center/js/demoutils.js"></script>
<script type="text/javascript">
    //初始化地图对象，加载地图
    var map = new AMap.Map("container", {
        zoom: 11
    });


    var logMapinfo = function (){
        var zoom = map.getZoom(); //获取当前地图级别
        var center = map.getCenter(); //获取当前地图级别
        document.querySelector("#map-center").innerText = center.toString();
    };
    logMapinfo();

    function mapMovestart(){
        document.querySelector("#text").innerText = '地图移动开始';
    }
    function mapMove(){
        logMapinfo();
        document.querySelector("#text").innerText = '地图正在移动';
    }
    function mapMoveend(){
        document.querySelector("#text").innerText = '地图移动结束';
    }
        
    // 事件绑定
    function moveOn(){
        log.success("绑定事件!");  
        map.on('movestart', mapMovestart);
        map.on('mapmove', mapMove);
        map.on('moveend', mapMoveend);
    }
    // 解绑事件
    function moveOff(){
        log.success("解除事件绑定!"); 
        map.off('movestart', mapMovestart);
        map.off('mapmove', mapMove);
        map.off('moveend', mapMoveend);
    }
    
    // 给按钮绑定事件
    document.getElementById("moveOn").onclick = moveOn;
    document.getElementById("moveOff").onclick = moveOff;


</script>
</body>
</html>

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