获取地理位置

//地理位置获取
function getLocation(){
	if (navigator.geolocation){
		navigator.geolocation.getCurrentPosition(showPosition,showError,{
			enableHighAccuracy:false,
			timeout:5000,
			maximumAge:3000
		});
	}else{
		itbeing.alert("您的浏览器不支持地理定位");
	}
}
function showPosition(position){
	//var latlon = position.coords.latitude+','+position.coords.longitude;
	doShowBaiduPositon(position.coords);
}

function doShowBaiduPositon(coords){
    var latlon = coords.latitude+','+coords.longitude;
    var url = "http://api.map.baidu.com/geocoder/v2/?ak=WxY4sOpglGhaLZtMncuuut5sZnMWPoQE&callback=renderReverse&location="+latlon+"&output=json&pois=0";
	$.ajax({
		type: "GET",
		dataType: "jsonp",
		url: url,
		beforeSend: function(){
			$("#area").html('正在定位...');
		},
		success: function (json) {
			if(json.status==0){
				//$("#area").html(json.result.addressComponent.city+' '+json.result.addressComponent.street);
				$("#area").html(json.result.addressComponent.city+' '+json.result.addressComponent.street);
				$("#lng").val(json.result.location.lng);
				$("#lat").val(json.result.location.lat);
				$("#location").val(json.result.addressComponent.city + ' ' + json.result.addressComponent.street);
			}
		},
		error: function (XMLHttpRequest, textStatus, errorThrown) {
			$("#area").html('地址位置获取失败');
		}
	});
}

function showError(error){
	switch(error.code) {
		case error.PERMISSION_DENIED:
			itbeing.alert("GPS定位失败,可能因为安全隐私缘由，用户拒绝请求地理定位,系统将使用移动IP地址进行定位！");
            $.getJSON('https://ipinfo.io/geo', function(response) { 
                var loc = response.loc.split(',');
                var coords = {
                    latitude: loc[0],
                    longitude: loc[1]
                };
                doShowBaiduPositon(coords);
            });
			break;
		case error.POSITION_UNAVAILABLE:
			itbeing.alert("定位失败,位置信息是不可用！");
			break;
		case error.TIMEOUT:
			itbeing.alert("定位失败,请求获取用户位置超时！");
			break;
		case error.UNKNOWN_ERROR:
			itbeing.alert("定位失败,定位系统失效！");
			break;
	}
}