百度地图定位坐标

<div id="map" style="width:500px;height:500px;"></div>
<script src="http://api.map.baidu.com/getscript?v=2.0&ak=WE4lbPGyj50XOUMe8VntG4hB&services=&t=20151215124550"></script>
<script>
loadMap();

//加载地图插件
function loadMap(){
//创建和初始化地图函数：
function initMap(){
createMap();//创建地图
setMapEvent();//设置地图事件
addMapControl();//向地图添加控件
addMapOverlay();//向地图添加覆盖物
}
function createMap(){
map = new BMap.Map("map");
map.centerAndZoom(new BMap.Point(经度,纬度),19);
}
function setMapEvent(){
map.enableScrollWheelZoom();
map.enableKeyboard();
map.enableDragging();
map.enableDoubleClickZoom()
}
function addClickHandler(target,window){
target.addEventListener("click",function(){
target.openInfoWindow(window);
});
}
function addMapOverlay(){
var markers = [
{content:"地点名称",title:"",imageOffset: {width:-46,height:-21},position:{lat:纬度,lng:经度}}
];
for(var index = 0; index < markers.length; index++ ){
var point = new BMap.Point(markers[index].position.lng,markers[index].position.lat);
var marker = new BMap.Marker(point,{icon:new BMap.Icon("http://api.map.baidu.com/lbsapi/createmap/images/icon.png",new BMap.Size(20,25),{
imageOffset: new BMap.Size(markers[index].imageOffset.width,markers[index].imageOffset.height)
})});
var label = new BMap.Label(markers[index].title,{offset: new BMap.Size(25,5)});
var opts = {
width: 200,
title: markers[index].title,
enableMessage: false
};
var infoWindow = new BMap.InfoWindow(markers[index].content,opts);
marker.setLabel(label);
addClickHandler(marker,infoWindow);
map.addOverlay(marker);
};
}
//向地图添加控件
function addMapControl(){
var scaleControl = new BMap.ScaleControl({anchor:BMAP_ANCHOR_BOTTOM_LEFT});
scaleControl.setUnit(BMAP_UNIT_IMPERIAL);
map.addControl(scaleControl);
var navControl = new BMap.NavigationControl({anchor:BMAP_ANCHOR_TOP_LEFT,type:BMAP_NAVIGATION_CONTROL_LARGE});
map.addControl(navControl);
var overviewControl = new BMap.OverviewMapControl({anchor:BMAP_ANCHOR_BOTTOM_RIGHT,isOpen:true});
map.addControl(overviewControl);
}
var map;
initMap();
}
</script>