获取地理位置的html5代码

 

 

/**

* 以下为html5代码,获取地理位置

*/

function getLocation() {

    //检查浏览器是否支持地理位置获取

    if (navigator.geolocation) {

        //若支持地理位置获取,成功调用showPosition(),失败调用showError

//        alert("正在努力获取位置...");

        var config = { enableHighAccuracy: true, timeout: 5000, maximumAge: 30000 };

        navigator.geolocation.getCurrentPosition(showPosition, showError, config);

    } else {

        //alert("Geolocation is not supported by this browser.");

        alert("定位失败,用户已禁用位置获取权限");

    }

}



/**

* 获取地址位置成功

*/

function showPosition(position) {

    //获得经度纬度

    var x = position.coords.latitude;

    var y = position.coords.longitude;

    //配置Baidu Geocoding API

    var url = "http://api.map.baidu.com/geocoder/v2/?ak=C93b5178d7a8ebdb830b9b557abce78b" +

			"&callback=renderReverse" +

			"&location=" + x + "," + y +

			"&output=json" +

			"&pois=0";

    $.ajax({

        type: "GET",

        dataType: "jsonp",

        url: url,

        success: function (json) {

            if (json == null || typeof (json) == "undefined") {

                return;

            }

            if (json.status != "0") {

                return;

            }

            setAddress(json.result.addressComponent);

        },

        error: function (XMLHttpRequest, textStatus, errorThrown) {

            alert("[x:" + x + ",y:" + y + "]地址位置获取失败,请手动选择地址");

        }

    });

}



/**

* 获取地址位置失败[暂不处理]

*/

function showError(error) {

    switch (error.code) {

        case error.PERMISSION_DENIED:

            alert("定位失败,用户拒绝请求地理定位");

            //x.innerHTML = "User denied the request for Geolocation.[用户拒绝请求地理定位]"

            break;

        case error.POSITION_UNAVAILABLE:

            alert("定位失败,位置信息是不可用");

            //x.innerHTML = "Location information is unavailable.[位置信息是不可用]"

            break;

        case error.TIMEOUT:

            alert("定位失败,请求获取用户位置超时");

            //x.innerHTML = "The request to get user location timed out.[请求获取用户位置超时]"

            break;

        case error.UNKNOWN_ERROR:

            alert("定位失败,定位系统失效");

            //x.innerHTML = "An unknown error occurred.[未知错误]"

            break;

    }

}



/**

 * 设置地址

 */



function setAddress(json) {

    var position = document.getElementById("txtPosition");

    //省

    var province = json.province;

    //市

    var city = json.city;

    //区

    var district = json.district;

    province = province.replace('市', ''); 

    position.value = province + "," + city + "," + district;

    position.style.color = 'black';

}