我正在尝试为一个应用程序创建一个里程计算器,我在网上找到了代码。
<html>
<head>
<meta name="viewport" content="initial-scale=1.0, user-scalable=no"/>
<script type="text/javascript" src="http://maps.google.com/maps/api/js?sensor=false"></script>
<script type="text/javascript">
var directionDisplay;
var map;
function initialize() {
directionsDisplay = new google.maps.DirectionsRenderer();
var copenhagen = new google.maps.LatLng(55.6771, 12.5704);
var myOptions = {
zoom:12,
`enter code here` mapTypeId: google.maps.MapTypeId.ROADMAP,
center: copenhagen
}
map = new google.maps.Map(document.getElementById("map_canvas"), myOptions);
directionsDisplay.setMap(map);
}
var directionsService = new google.maps.DirectionsService();
function calcRoute() {
var start = document.getElementById("start").value;
var end = document.getElementById("end").value;
var distanceInput = document.getElementById("distance");
var request = {
origin:start,
destination:end,
travelMode: google.maps.DirectionsTravelMode.DRIVING
};
directionsService.route(request, function(response, status) {
if (status == google.maps.DirectionsStatus.OK) {
directionsDisplay.setDirections(response);
distanceInput.value = response.routes[0].legs[0].distance.value / 1000;
}
});
}
</script>
<title>Distance Calculator</title>
<style type="text/css">
body {
font-family:Helvetica, Arial;
}
#map_canvas {
height: 50%;
}
</style>
</head>
<body>
<body onload="initialize()">
<p>Enter your current location and desired destination to get the distance</p>
<div>
<p>
<label for="start">Start: </label>
<input type="text" name="start" id="start" />
<label for="end">End: </label>
<input type="text" name="end" id="end" />
<input type="submit" value="Calculate Route" onclick="calcRoute()" />
</p>
<p>
<label for="distance">Distance (km): </label>
<input type="text" name="distance" id="distance" readonly="true" />
</p>
</div>
<div id="map_canvas"></div>
</body>
</html>
javascript google geolocation maps
我希望在打开用户电子邮件(例如 PC 上的 Windows Live Mail 或平板电脑上的 Yahoo Mail 应用程序)的页面上的链接上有一个点击电子邮件链接,并在电子邮件正文中显示“您的里程是 ???”。我可以这样做,但我希望自动输入里程。我已在脚本的 html 部分中添加了此代码...
<p><a href="mailto:youremail.yahoo.com?subject=Mileage
&body=calcRoute('string', 'distance')">Click to send email</a></p>
...它会打开电子邮件,但不显示计算出的里程。相反,它在正文中显示 calcRoute('string, distance')。我如何让它显示里程?
我知道这个问题很长,但如果您能花时间回答,我将不胜感激。尽快得到有效的答案非常重要。谢谢你。