• 高德地图API 之行政区+范围+平移+经纬度+鼠标样式

    获取当前地图的行政区 getCity()

    <!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">

    </div>

    <script>
        var map=new AMap.Map("container");    

        map.on("moveend",function(){
            //获取行政区
            map.getCity(function(info){
                console.log(info);
                setZoomNode.innerHTML=info.province+","+info.city+","+info.district;
            })
        })
        
    </script>    
</body>
</html>

     注意：默认只能获取中国的行政区

    设置行政区 setCity()

    <!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="city">
        <button id="btn">设置行政区</button>
    </div>

    <script>
        var map=new AMap.Map("container");    

        map.on("moveend",function(){
            //获取行政区
            map.getCity(function(info){
                console.log(info);
                setZoomNode.innerHTML=info.province+","+info.city+","+info.district;
            })
        })

        //设置行政区
        map.setCity("宁波");

        //通过事件设置行政区
        btn.onclick=function(){
            map.setCity(city.value);
        }
        
    </script>    
</body>
</html>

    获取地图的范围 getBounds()

    c对象

    northeast 右上

    southwest 左下

    <!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:400px;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">
        <span id="ne"></span><br>
        <span id="sw"></span><br>
    </div>

    <script>
        var map=new AMap.Map("container");    

        map.on("moveend",function(){
            //获取范围
            console.log(map.getBounds());
            ne.innerHTML=map.getBounds().northeast.toString();
            sw.innerHTML=map.getBounds().southwest.toString();
        })
        
    </script>    
</body>
</html>

    设置地图的显示范围 setBounds()

    <!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:400px;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">
        <span id="ne"></span><br>
        <span id="sw"></span><br>
    </div>

    <script>
        var map=new AMap.Map("container");    

        //先左下角，再右上角
        var myBounds=new AMap.Bounds([122.240801,29.401671],[123.539934,30.261788]);
        map.setBounds(myBounds);

        //设置的范围并不一定完全贴合获取到的范围，只能是尽可能匹配
        console.log(map.getBounds().northeast.toString());
        console.log(map.getBounds().southwest.toString());
        
    </script>    
</body>
</html>

    限制显示范围 setLimitBounds()

    <!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:400px;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">
        <span id="ne"></span><br>
        <span id="sw"></span><br>
    </div>

    <script>
        var map=new AMap.Map("container");    

        //限制显示范围
        var bounds=map.getBounds();
        map.setLimitBounds(bounds);
        
    </script>    
</body>
</html>

    限制在当前范围内不可查看其它范围的

    解除范围限制 clearLimitBounds()

    <!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:400px;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">
        <span id="ne"></span><br>
        <span id="sw"></span><br>
    </div>

    <script>
        var map=new AMap.Map("container");    

        //限制显示范围
        var bounds=map.getBounds();
        map.setLimitBounds(bounds);

        //解除范围限制
        map.clearLimitBounds();
        
    </script>    
</body>
</html>

    控制单个坐标值的限制

    <!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:400px;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">
        <span id="ne"></span><br>
        <span id="sw"></span><br>
    </div>

    <script>
        var map=new AMap.Map("container");    

        //限制显示范围
        var bounds=map.getBounds();
        console.log(bounds);
        //单独限制右上角的水平坐标不能超过123
        bounds.northeast.R=123;
        
        map.setLimitBounds(bounds);

        //解除范围限制
        map.clearLimitBounds();
        
    </script>    
</body>
</html>

    以上实现右上角的水平范围不会超过123

    一个关于显示和解除地图范围的demo

    <!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:400px;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">
        右边水平限制：<input type="text" id="x2"><br>
        左边水平限制<input type="text" id="x1"><br>
        <button id="btn">确定</button>
        <button id="clear">解除限制</button>
    </div>

    <script>
        var map=new AMap.Map("container");    

        //限制显示范围
        btn.onclick=function(){
            var bounds=map.getBounds();
            //input输入的文本是string，需要转为number
            bounds.northeast.R=Number(x2.value);
            bounds.southwest.R=Number(x1.value);
            map.setLimitBounds(bounds);
        }

        //解除显示范围
        clear.onclick=function(){
            map.clearLimitBounds();
        }

        map.on("moveend",function(){
            console.log(map.getBounds().northeast.R);
            console.log(map.getBounds().southwest.R);
        })
        
    </script>    
</body>
</html>

    地图的平移，以像素为单位

    panBy(左右像素，上下像素） 左正右负，上正下负

    <!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:400px;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">
        右边水平限制：<input type="text" id="x2"><br>
        左边水平限制<input type="text" id="x1"><br>
        <button id="btn">确定</button>
        <button id="clear">解除限制</button>
    </div>

    <script>
        var map=new AMap.Map("container");    

        setTimeout(function(){
            //向左平移50像素，向上平移30像素
            map.panBy(50,30);
        },2000);
        
    </script>    
</body>
</html>

    随机移动

    <!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:400px;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">

    </div>

    <script>
        var map=new AMap.Map("container");    

        //每3秒随机移动
        setInterval(function(){
            //向左上方向随机移动
            //map.panBy(30*Math.random(),30*Math.random());

            //不确定方向的随机移动
            map.panBy(30*Math.random()-15,30*Math.random()-15);
        },3000);
        
    </script>    
</body>
</html>

    panTo() 移动到指定位置

    <!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:400px;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">

    </div>

    <script>
        var map=new AMap.Map("container");    

        console.log(map.getCenter().toString());

        setTimeout(function(){
            // 宁波移动到了绍兴
            map.panTo([120.549792,29.868388]);
        },3000);
        
    </script>    
</body>
</html>

    通过事件设置平移

    <!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:400px;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="x">
        <input type="text" id="y">
        <button id="btn">移动</button>
    </div>

    <script>
        var map=new AMap.Map("container");    

        console.log(map.getCenter().toString());
        
        //通过事件设置
        btn.onclick=function(){
            map.panTo([x.value,y.value]);
        }
    </script>    
</body>
</html>

    获取鼠标的经纬度

    longitude  经度

    latitude 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; }  
        #setZoomNode{width:400px;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">
        鼠标点击的经纬度：<span id="xy"></span>
    </div>

    <script>
        var map=new AMap.Map("container");    

        //通过事件设置
        map.on("click",function(e){
            console.log(e.lnglat);
            xy.innerHTML=e.lnglat.lng+","+e.lnglat.lat;
            //同时将鼠标点击位置设置为中心点
            map.setCenter([e.lnglat.lng,e.lnglat.lat]);
        })
    </script>    
</body>
</html>

     以上代码实现鼠标点击的位置作为地图的中心点

    设置鼠标样式 setDefaultCursor() 

    <!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:400px;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">
        
    </div>

    <script>
        var map=new AMap.Map("container");    

        //只要是css的cursor中能设置的属性值，都可以
        map.setDefaultCursor("pointer");
    </script>    
</body>
</html>
  • 相关阅读:
    python之路---13 内置函数
    python之路---10 *args **kwargs 命名空间 作用域 函数的嵌套
    python之路---11 第一类对象 函数名 闭包 迭代器
    python之路---08 文件操作
    python之路---09 初始函数 参数
    python之路---07 join() fromkeys() 深浅拷贝
    python之路---05 字典 集合
    python之路---06 小数据池 编码
    CSS3 transition-timing-function 深入理解和技巧
    Web Audio初步介绍和实践
  • 原文地址：https://www.cnblogs.com/chenyingying0/p/12431615.html
Copyright © 2020-2023  润新知