html5 返回当前地理位置的坐标点（经纬度）
BAIDU
<!DOCTYPE html>
<html>
<body>
<p id="demo">点击这个按钮，获得您的坐标：</p>
<button onclick="getLocation()">试一下</button>
<script>
var x=document.getElementById("demo");
function getLocation()
{
if (navigator.geolocation)
{
navigator.geolocation.getCurrentPosition(showPosition);
}
else{x.innerHTML="Geolocation is not supported by this browser.";}
}
function showPosition(position)
{
x.innerHTML="Latitude: " + position.coords.latitude +
"<br />Longitude: " + position.coords.longitude;
}
</script>
</body>
</html><!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>GIS开发利用html5获取经纬度</title>
</head>
<body>
<span id="support">将以下的经纬度输入谷歌地图：</span>
<div id="show">
纬度：<span id="latitude"></span><br />
经度：<span id="longitude"></span><br />
经纬度准确度：<span id="accuracy"></span><br />
海拔：<span id="altitude"></span><br />
海拔高度的准确度：<span id="altitudeAcuracy"></span><br />
朝向：<span id="heading"></span><br />
速度：<span id="speed"></span>
</div>
<script type="text/javascript">
var doc = document,
latitude = doc.getElementById('latitude'),
longitude = doc.getElementById('longitude'),
accuracy = doc.getElementById('accuracy'),
altitude = doc.getElementById('altitude'),
altitudeAcuracy = doc.getElementById('altitudeAcuracy'),
heading = doc.getElementById('heading'),
speed = doc.getElementById('speed'),
support = doc.getElementById('support'),
showDiv = doc.getElementById('show');
function lodeSupport(){
if(navigator.geolocation){
support.innerHTML = '将以下的经纬度输入谷歌地图(纬度 经度)查看自己位置：';
showDiv.style.display = 'block';
navigator.geolocation.getCurrentPosition(updataPosition,showError);
}else{
support.innerHTML = '对不起，浏览器不支持！';
showDiv.style.display = 'none';
}
}
function updataPosition(position){
var latitudeP = position.coords.latitude,
longitudeP = position.coords.longitude,
accuracyP = position.coords.accuracy,
altitudeP = position.coords.altitude,
altitudeAcuracyP = position.coords.altitudeAcuracy,
headingP = position.coords.heading,
speedP = position.coords.speed;
latitude.innerHTML = latitudeP;
longitude.innerHTML = longitudeP;
accuracy.innerHTML = accuracyP;
altitude.innerHTML = altitudeP;
altitudeAcuracy.innerHTML = altitudeAcuracyP;
heading.innerHTML = headingP;
speed.innerHTML = speedP;
}
function showError(error)
{
switch(error.code)
{
case error.PERMISSION_DENIED:
showDiv.innerHTML="用户拒绝訪问地理位置"
break;
case error.POSITION_UNAVAILABLE:
showDiv.innerHTML="地理位置信息无法获取"
break;
case error.TIMEOUT:
showDiv.innerHTML="获取位置时间超时"
break;
case error.UNKNOWN_ERROR:
showDiv.innerHTML="我擦，这是一个未知的错误"
break;
}
}
window.addEventListener('load', lodeSupport , true);
</script>
</body>
</html>
