html5获取经纬度，百度api获取街区名，并使用JS保存进cookie

引用js
<script type="text/javascript" src="http://api.map.baidu.com/api?v=2.0&ak=百度申请的ak"></script>

//html5获取经纬度
function GetLocation() {
        if (navigator.geolocation) {
            navigator.geolocation.getCurrentPosition(showPosition);
        }
        else {
            alert("Geolocation is not supported by this browser.");
        }
    }

//百度api获取街区名
    function showPosition(position) {
        var origins = position.coords.latitude + "," + position.coords.longitude;
        var myGeo = new BMap.Geocoder();
        var point = new BMap.Point(position.coords.longitude, position.coords.latitude);

        myGeo.getLocation(point, function (rs) {
            var addComp = rs.addressComponents;
            setCookie(‘c_district’，rs.addressComponents.district，1);
        });
    }

//JS保存cookie
    function setCookie(c_name, value, expiredays) {
        var exdate = new Date()
        exdate.setDate(exdate.getDate() + expiredays)
        document.cookie = c_name + "=" + value + ';path=/' + ((expiredays == null) ? "" : ";expires=" + exdate.toGMTString())
    }

//获取cookie
function getCookie(c_name) {
        if (document.cookie.length > 0) {
            c_start = document.cookie.indexOf(c_name + "=")
            if (c_start != -1) {
                c_start = c_start + c_name.length + 1
                c_end = document.cookie.indexOf(";", c_start)
                if (c_end == -1) c_end = document.cookie.length
                return (document.cookie.substring(c_start, c_end));
            }
        }
        return ""
    }