• 高德地图API,获取和设置zoom级别和中心点


    双击可以调整高德地图的级别

    zoom 改变初始地图的级别,zoom值越高,相当于鼠标双击放大,内容越详细,范围越小

    center 改变初始地图的中心点,是一个数组,包含经纬度

    <!DOCTYPE html>
    <html lang="en">
    <head>
        <meta charset="UTF-8">
        <title>map</title>
        <script type="text/javascript" src="https://webapi.amap.com/maps?v=1.4.15&key=ce3b1a3a7e67fc75810ce1ba1f83c01a"></script> 
        <style>
            *{margin:0;padding:0;}
            #container {width:100%; height: 100%;top:0;left:0;position: absolute; }  
        </style>
    </head>
    <body>
        <div id="container"></div> 
    
        <script>
            new AMap.Map("container",{
                zoom:12,//初始化地图级别
                center:[120,30]//初始化地图中心点
            });    
        </script>    
    </body>
    </html>

    getZoom() 获取级别

    getCenter()   getCenter().toString() 获取中心点

    <!DOCTYPE html>
    <html lang="en">
    <head>
        <meta charset="UTF-8">
        <title>map</title>
        <script type="text/javascript" src="https://webapi.amap.com/maps?v=1.4.15&key=ce3b1a3a7e67fc75810ce1ba1f83c01a"></script> 
        <style>
            *{margin:0;padding:0;}
            #container {width:100%; height: 100%;top:0;left:0;position: absolute; }  
        </style>
    </head>
    <body>
        <div id="container"></div> 
    
        <script>
            var map=new AMap.Map("container");    
            console.log(map.getZoom());//获取级别
            console.log(map.getCenter());//获取中心点
            console.log(map.getCenter().toString());
        </script>    
    </body>
    </html>

    on("moveend")  监听移动停止事件

    <!DOCTYPE html>
    <html lang="en">
    <head>
        <meta charset="UTF-8">
        <title>map</title>
        <script type="text/javascript" src="https://webapi.amap.com/maps?v=1.4.15&key=ce3b1a3a7e67fc75810ce1ba1f83c01a"></script> 
        <style>
            *{margin:0;padding:0;}
            #container {width:100%; height: 100%;top:0;left:0;position: absolute; }  
        </style>
    </head>
    <body>
        <div id="container"></div> 
    
        <script>
            var map=new AMap.Map("container");    
    
            map.on("moveend",function(){
                console.log(map.getZoom());//获取级别
                console.log(map.getCenter().toString());//获取中心点            
            })
            
        </script>    
    </body>
    </html>

    on("zoomend")  双击结束事件,改变级别事件

    <!DOCTYPE html>
    <html lang="en">
    <head>
        <meta charset="UTF-8">
        <title>map</title>
        <script type="text/javascript" src="https://webapi.amap.com/maps?v=1.4.15&key=ce3b1a3a7e67fc75810ce1ba1f83c01a"></script> 
        <style>
            *{margin:0;padding:0;}
            #container {width:100%; height: 100%;top:0;left:0;position: absolute; }  
        </style>
    </head>
    <body>
        <div id="container"></div> 
    
        <script>
            var map=new AMap.Map("container");    
    
            map.on("zoomend",function(){
                console.log(map.getZoom());//获取级别
                console.log(map.getCenter().toString());//获取中心点            
            })
            
        </script>    
    </body>
    </html>

    setZoom() 设置地图级别

    <!DOCTYPE html>
    <html lang="en">
    <head>
        <meta charset="UTF-8">
        <title>map</title>
        <script type="text/javascript" src="https://webapi.amap.com/maps?v=1.4.15&key=ce3b1a3a7e67fc75810ce1ba1f83c01a"></script> 
        <style>
            *{margin:0;padding:0;}
            #container {width:100%; height: 100%;top:0;left:0;position: absolute; }  
        </style>
    </head>
    <body>
        <div id="container"></div> 
    
        <script>
            var map=new AMap.Map("container");    
    
            //设置地图级别
            setTimeout(function(){
                map.setZoom(15);
            },3000);
            
        </script>    
    </body>
    </html>

    通过事件设置zoom

    <!DOCTYPE html>
    <html lang="en">
    <head>
        <meta charset="UTF-8">
        <title>map</title>
        <script type="text/javascript" src="https://webapi.amap.com/maps?v=1.4.15&key=ce3b1a3a7e67fc75810ce1ba1f83c01a"></script> 
        <style>
            *{margin:0;padding:0;}
            #container {width:100%; height: 100%;top:0;left:0;position: absolute; }  
            #setZoomNode{width:300px;height:100px;background-color: #fff;border:1px solid;box-shadow:0 0 5px #000;top:20px;right:20px;position: absolute;}
        </style>
    </head>
    <body>
        <div id="container"></div> 
        <div id="setZoomNode">
            <input type="text" id="zoomVal">
            <button id="zoomBtn">设置zoom</button>
        </div>
    
        <script>
            var map=new AMap.Map("container");    
    
            //设置地图级别
    
            zoomBtn.onclick=function(){
                map.setZoom(zoomVal.value);
            }
            
        </script>    
    </body>
    </html>

    setCenter([ ]) 设置地图中心点

    <!DOCTYPE html>
    <html lang="en">
    <head>
        <meta charset="UTF-8">
        <title>map</title>
        <script type="text/javascript" src="https://webapi.amap.com/maps?v=1.4.15&key=ce3b1a3a7e67fc75810ce1ba1f83c01a"></script> 
        <style>
            *{margin:0;padding:0;}
            #container {width:100%; height: 100%;top:0;left:0;position: absolute; }  
            #setZoomNode{width:300px;height:100px;background-color: #fff;border:1px solid;box-shadow:0 0 5px #000;top:20px;right:20px;position: absolute;}
        </style>
    </head>
    <body>
        <div id="container"></div> 
    
        <script>
            var map=new AMap.Map("container");    
    
            //设置地图中心点
            setTimeout(function(){
                map.setCenter([121.11,30]);
            },1000);
    
            
        </script>    
    </body>
    </html>

    通过事件设置地图中心点

    <!DOCTYPE html>
    <html lang="en">
    <head>
        <meta charset="UTF-8">
        <title>map</title>
        <script type="text/javascript" src="https://webapi.amap.com/maps?v=1.4.15&key=ce3b1a3a7e67fc75810ce1ba1f83c01a"></script> 
        <style>
            *{margin:0;padding:0;}
            #container {width:100%; height: 100%;top:0;left:0;position: absolute; }  
            #setCenterNode{width:300px;height:100px;background-color: #fff;border:1px solid;box-shadow:0 0 5px #000;top:20px;right:20px;position: absolute;}
        </style>
    </head>
    <body>
        <div id="container"></div> 
        <div id="setCenterNode">
            x <input type="text" id="xVal"><br>
            y <input type="text" id="yVal"><br>
            <button id="btn">设置中心点</button>
        </div>
    
        <script>
            var map=new AMap.Map("container");    
    
            //设置地图中心点
            btn.onclick=function(){
                map.setCenter([xVal.value,yVal.value]);
            }
            
        </script>    
    </body>
    </html>

    setZoomAndCenter  同时设置zoom和center

    <!DOCTYPE html>
    <html lang="en">
    <head>
        <meta charset="UTF-8">
        <title>map</title>
        <script type="text/javascript" src="https://webapi.amap.com/maps?v=1.4.15&key=ce3b1a3a7e67fc75810ce1ba1f83c01a"></script> 
        <style>
            *{margin:0;padding:0;}
            #container {width:100%; height: 100%;top:0;left:0;position: absolute; }  
            #setZoomNode{width:300px;height:100px;background-color: #fff;border:1px solid;box-shadow:0 0 5px #000;top:20px;right:20px;position: absolute;}
        </style>
    </head>
    <body>
        <div id="container"></div> 
        <div id="setZoomNode">
            级别 <input type="text" id="zoomVal"><br>
            中心点x <input type="text" id="xVal"><br>
            中心点y <input type="text" id="yVal"><br>
            <button id="btn">设置中心点和zoom</button>
        </div>
    
        <script>
            var map=new AMap.Map("container");    
    
            //设置地图中心点
            btn.onclick=function(){
                map.setZoomAndCenter(zoomVal.value,[xVal.value,yVal.value]);
            }
            
        </script>    
    </body>
    </html>

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  • 原文地址:https://www.cnblogs.com/chenyingying0/p/12423255.html
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