HTML5网页定位，并将位置绘在百度地图上-优快云博客

本文介绍了一个使用HTML5地理定位API结合百度地图API实现的网页定位功能。通过获取用户的经纬度坐标并在百度地图上显示具体位置及详细地址信息。

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运行效果：

实现代码：

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>HTML5定位</title>
    <meta name="viewport" content="width=device-width, initial-scale=1" />
    <script type="text/javascript" src="http://lib.sinaapp.com/js/jquery/1.7.2/jquery.min.js"></script>
    <script type="text/javascript" src="http://api.map.baidu.com/api?v=2.0&ak=wqBXfIN3HkpM1AHKWujjCdsi"></script>
    <script type="text/javascript" src="http://developer.baidu.com/map/jsdemo/demo/convertor.js"></script>
    <style type="text/css">
        * { margin: 0px; padding: 0px; }
        body { font: normal 100% Helvetica, Arial, sans-serif; text-align: center; height: 100%; overflow: hidden; }
        #allmap { width: 100%; height: 100%; position: absolute; }
    </style>
</head>
<body>
    <script type="text/javascript">
        $(function () {
            // 单次位置请求执行的函数             
            function getLocation() {
                if (navigator.geolocation) {
                    navigator.geolocation.getCurrentPosition(showPosition, locationError);
                } else {
                    alert("你的浏览器不支持 GeoLocation.");
                }
            }

            // 页面加载时执行getLocation函数
            //window.onload = getLocation;

            $("#btn").click(function () {
                getLocation();
            });

            getLocation();
        });

        //定位成功时，执行的函数
        function showPosition(position) {
            var lon = position.coords.longitude;
            var lat = position.coords.latitude;
            // alert("您位置的经度是："+lon+" 纬度是："+lat);
            var map = new BMap.Map("allmap");
            var point = new BMap.Point("" + lon + "", "" + lat + "");
            map.centerAndZoom(point, 19);
            var gc = new BMap.Geocoder();
            translateCallback = function (point) {
                var marker = new BMap.Marker(point);
                map.addOverlay(marker);
                map.setCenter(point);
                gc.getLocation(point, function (rs) {
                    var addComp = rs.addressComponents;
                    if (addComp.province !== addComp.city) {
                        var sContent =
                                  "<div><h4 style='margin:0 0 5px 0;padding:0.2em 0'>你当前的位置是：</h4>" +
                                  "<p style='margin:0;line-height:1.5;font-size:13px;text-indent:2em'>" + addComp.province + ", " + addComp.city + ", " + addComp.district + ", " + addComp.street + ", " + addComp.streetNumber + "</p>" +
                                  "</div>";
                    }
                    else {
                        var sContent =
                                  "<div><h4 style='margin:0 0 5px 0;padding:0.2em 0'>你当前的位置是：</h4>" +
                                  "<p style='margin:0;line-height:1.5;font-size:13px;text-indent:2em'>" + addComp.city + ", " + addComp.district + ", " + addComp.street + ", " + addComp.streetNumber + "</p>" +
                                  "</div>";
                    }
                    var infoWindow = new BMap.InfoWindow(sContent);
                    map.openInfoWindow(infoWindow, point);
                });
            }
            BMap.Convertor.translate(point, 0, translateCallback);
        }
        // 定位失败时，执行的函数
        function locationError(error) {
            switch (error.code) {
                case error.PERMISSION_DENIED:
                    alert("User denied the request for Geolocation.");
                    break;
                case error.POSITION_UNAVAILABLE:
                    alert("Location information is unavailable.");
                    break;
                case error.TIMEOUT:
                    alert("The request to get user location timed out.");
                    break;
                case error.UNKNOWN_ERROR:
                    alert("An unknown error occurred.");
                    break;
            }
        }
    </script>
    <input type="button" value="网页定位-获取我的位置" id="btn" style="padding: 10px 20px; font-size: 120%;
        margin: 20px;" />
    <div id="allmap">
    </div>
</body>
</html>