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872天前<html> |
<head> |
<meta http-equiv="Content-Type" content="text/html; charset=GBK" /> |
<script language="javascript"> |
var options = { |
enableHighAccuracy: true, |
maximumAge: 60000, |
timeout: 45000 |
}; |
window.onload = function() { |
if (window.navigator.geolocation) { |
navigator.geolocation.getCurrentPosition(successCallback, errorCallback,options); |
} else { |
alert('Your browser does not natively support geolocation.'); |
} |
} |
function successCallback(position){ |
alert("成功获取地理位置..."); |
var posiText = "当前维度:"+position.coords.latitude; |
posiText += "</br>" +"当前经度:"+position.coords.longitude; |
posiText +="</br>" +"精确到:"+position.coords.accuracy +"米"; |
if (position.coords.altitude) |
posiText += '</br>高度: ' + position.coords.altitude + " 米"; |
posiText += '<br/>距离北京天安门' + distance(position.coords.latitude,position.coords.longitude,39.5427,116.2317) +'公里'; |
document.getElementById("positionInfo").innerHTML = posiText; |
} |
function errorCallback(error){ |
|
} |
|
|
function toRadians(degree) { |
return degree * Math.PI / 180; |
} |
//通过经纬度计算距离的函数 |
function distance(latitude1, longitude1, latitude2, longitude2) { |
// R is the radius of the earth in kilometers |
var R = 6371; |
var deltaLatitude = toRadians(latitude2-latitude1); |
var deltaLongitude = toRadians(longitude2-longitude1); |
latitude1 =toRadians(latitude1); |
latitude2 =toRadians(latitude2); |
var a = Math.sin(deltaLatitude/2) * Math.sin(deltaLatitude/2) +Math.cos(latitude1) *Math.cos(latitude2) * Math.sin(deltaLongitude/2) * Math.sin(deltaLongitude/2); |
var c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1-a)); |
var d = R * c; |
return d; |
} |
</script> |
</head> |
<body> |
当前位置信息<br/> |
<div id ="positionInfo"></div> |
|
</body> |
|
</html> |
