硬件相关API-geolocation-秀野堂官方网站

geolocation

简介

Geolocation API用于将用户当前地理位置信息共享给信任的站点，这涉及用户的隐私安全问题，所以当一个站点

需要获取用户的当前地理位置，浏览器会提示用户是“允许” or “拒绝”。

navigator对象中，只包含3个方法：

getCurrentPosition

watchPosition

clearWatch

代码实例

<html>            
<head>            
<meta    http-equiv="Content-Type"    contentType="text/html;    charset=UTF-8"    %>            
<title>HTML5    物理定位</title>            
<script    type="text/javascript">        
window.onload=function(){        
                var    options={        
                                                enableHighAccuracy:true,        
                                                maximunAge:1000,        
                                                timeout:45000        
                };        
                if(window.navigator.geolocation){        
                                navigator.geolocation.getCurrentPosition(successCallback,errorCallback,options);        
                }else{        
                                alert("你的浏览器不支持定位!");        
                }        
}        
function    successCallback(position){        
                var    output="";        
                output    +="Your    position    has    bean    located    .    
";        
                output+="    Latitude:"+position.coords.latitude+"    ";        
                output+="    Longitude:"+position.coords.longitude+"    ";        
                output+="    Accuracy    :"+position.coords.accuracy    +"    meters";        
                if(position.coords.latitude){        
                                output+="    Accuracy    :"+position.coords.altitudeAccuracy    +"    meters";        
                }        
                if(position.coords.heading){        
                                output+="    Heading    :"+position.coords.Heading    +"    meters";        
                }        
                if(position.coords.speed){        
                                output+="    Speed    :"+position.coords.Speed    +"    m/s";        
                }        
                output+="    Time    of    Position    "+position.timestamp    +"    m/s";        
                alert(output);        
}        
function    errorCallback(error){        
            switch(error.code){        
            case    error.PERMISSION_DENIED:        
                            alert("you    have    denied    access    to    your    position    .");        
                            break;        
            case    error.POSITION_UNAVAILABLE:        
                            alert("there    was    a    problem    getting    yout    position    .");        
                            break;        
            case    error.TIMEOUT:        
                            alert("The    application    has    timed    out    attempting    to    get    your    location    .");        
                            break;        

            }        
}        
</script>        
</head>            
<body    >            

</body>            
</html>

[ 该条目创建时间：2016-06-25 17:21:06 ]