Javascript Chrome中的地理定位API:Position的coord属性未定义
我正在Google Chrome(v13)中试用地理定位API。我制作了一个简单的HTML页面来掌握基本知识:Javascript Chrome中的地理定位API:Position的coord属性未定义,javascript,html,google-chrome,geolocation,Javascript,Html,Google Chrome,Geolocation,我正在Google Chrome(v13)中试用地理定位API。我制作了一个简单的HTML页面来掌握基本知识: <html> <head> <script type="text/javascript"> navigator.geolocation.getCurrentPosition(doStuff, error, setOptions); function setOptions(geoLoc) {
<html>
<head>
<script type="text/javascript">
navigator.geolocation.getCurrentPosition(doStuff, error, setOptions);
function setOptions(geoLoc) {
geoLoc.enableHighAccuracy = true;
geoLoc.timeout = 30;
geoLoc.maximumAge = 0;
}
function doStuff(geoLoc) {
document.getElementById("refreshTimestamp").innerHTML = "Last refresh: " + Date.now();
document.getElementById("latitude").innerHTML = "Latitude: " + geoLoc.coords.latitude;
document.getElementById("longitude").innerHTML = "Longitude: " + geoLoc.coords.longitude;
document.getElementById("altitude").innerHTML = "Altitude: " + geoLoc.coords.altitude;
document.getElementById("accuracy").innerHTML = "Accuracy: " + geoLoc.coords.accuracy;
document.getElementById("altitudeAccuracy").innerHTML = "Altitude Accuracy: " + geoLoc.coords.altitudeAccuracy;
document.getElementById("heading").innerHTML = "Heading: " + geoLoc.coords.heading;
document.getElementById("speed").innerHTML = "Speed: " + geoLoc.coords.speed;
}
function error(geoLoc) {
document.getElementById("error").innerHTML = "ERROR! Code: " + geoLoc.code + "; Message: " + geoLoc.message;
}
</script>
</head>
<body onload="doStuff()">
<p id="refreshTimestamp"></p>
<p id="latitude"></p>
<p id="longitude"></p>
<p id="altitude"></p>
<p id="accuracy"></p>
<p id="altitudeAccuracy"></p>
<p id="heading"></p>
<p id="speed"></p>
<p id="error"></p>
</body>
</html>
调试它看起来像是位置对象在第一次调用时未定义-处理纬度的行。然而,后面的任何一行都没有错误。事实上,在纬度线之后,定位物体就存在了
我试图防止此错误的措施包括:
Chris.由于以下原因未定义:
<body onload="doStuff()">
也许你想要这样的东西:
function init() {
navigator.geolocation.getCurrentPosition(doStuff, error, setOptions);
}
...
<body onload="init()">
函数init(){
navigator.geolocation.getCurrentPosition(doStuff、error、setOptions);
}
...
您是否从文件运行://
URL?如果是这样,请从http://
function init() {
navigator.geolocation.getCurrentPosition(doStuff, error, setOptions);
}
...
<body onload="init()">