Html5 Geolocation获取地理位置信息实例使用HTML5 Geolocation实现一个距离追踪器HTML5的Geolocation地理位置定位API使用教程html5指南-4.使用Geolocation实现定位功能html5指南-7.geolocation结合google maps开发一个小的应用HTML5 Geolocation API的正确使用方法

(function() { // 闭包 function load_script(xyUrl, callback) { var head = document.getElementsByTagName('head')[0]; var script = document.createElement('script'); script.type = 'text/javascript'; script.src = xyUrl; // 借鉴了jQuery的script跨域方法 script.onload = script.onreadystatechange = function() { if ((!this.readyState || this.readyState === "loaded" || this.readyState === "complete")) { callback && callback(); // Handle memory leak in IE script.onload = script.onreadystatechange = null; if (head && script.parentNode) { head.removeChild(script); } } }; // Use insertBefore instead of appendChild to circumvent an IE6 bug. head.insertBefore(script, head.firstChild); } function translate(point, type, callback) { var callbackName = 'cbk_' + Math.round(Math.random() * 10000); // 随机函数名 var xyUrl = "http://api.map.baidu.com/ag/coord/convert?from=" + type + "&to=4&x=" + point.lng + "&y=" + point.lat + "&callback=BMap.Convertor." + callbackName; // 动态创建script标签 load_script(xyUrl); BMap.Convertor[callbackName] = function(xyResult) { delete BMap.Convertor[callbackName]; // 调用完需要删除改函数 var point = new BMap.Point(xyResult.x, xyResult.y); callback && callback(point); } } window.BMap = window.BMap || {}; BMap.Convertor = {}; BMap.Convertor.translate = translate; })();