【发布时间】：2014-11-13 16:18:03
【问题描述】：
我正在尝试计算从我的工作场所到不同目的地的距离。 我有一个包含 3 个字段的表单： 日期 目的地 距离 我想通过输入目的地地址来获得距离 - 这应该在我提交表单之前发生（以获得最佳用户体验）。 我正在尝试使用 google maps api，但无法将目标字段中的输入输入到 js 代码 var DestinationA 中。我也在提交之前使用“onchange”来获取输入。
然后我的下一步是将距离结果放入表单字段距离中。
非常感谢任何帮助。
这是我的测试站点：www.e-kl.dk/s/_kort.asp
这是我的代码：
<%@LANGUAGE="VBSCRIPT" CODEPAGE="1252"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>test</title>
<script src="https://maps.googleapis.com/maps/api/js?v=3.exp"></script>
<style>
html, body {
height: 100%;
margin: 0;
padding: 0;
}
#map-canvas {
height: 200px;
width: 200px;
position: absolute;
left: 3px;
top: 92px;
z-index: 1;
}
#content-pane {
float:right;
width:48%;
padding-left: 2%;
}
#outputDiv {
font-size: 11px;
height: 50px;
width: 876px;
position: absolute;
left: 0px;
}
</style>
</head>
<script>
var map;
var geocoder;
var bounds = new google.maps.LatLngBounds();
var markersArray = [];
var origin1 = 'Gl. Hovedgade 10, Denmark';
// var destinationA = 'ballerup'; //THIS WORKS but I need the user input....
// var destinationA = document.form1.destination; //did not work
// var addressField = document.getElementById('destination'); //did not work
// var destinationA = addressField.value;
// var destinationA = $("#destination").val(); //did not work
var destinationIcon = 'https://chart.googleapis.com/chart?chst=d_map_pin_letter&chld=D|FF0000|000000';
var originIcon = 'https://chart.googleapis.com/chart?chst=d_map_pin_letter&chld=O|FFFF00|000000';
function initialize() {
var opts = {
center: new google.maps.LatLng(55.876, 12.5),
zoom: 15
};
map = new google.maps.Map(document.getElementById('map-canvas'), opts);
geocoder = new google.maps.Geocoder();
}
function calculateDistances() {
var service = new google.maps.DistanceMatrixService();
service.getDistanceMatrix(
{
origins: [origin1],
destinations: [destinationA],
travelMode: google.maps.TravelMode.DRIVING,
unitSystem: google.maps.UnitSystem.METRIC,
avoidHighways: false,
avoidTolls: false
}, callback);
}
function callback(response, status) {
if (status != google.maps.DistanceMatrixStatus.OK) {
alert('Error was: ' + status);
} else {
var origins = response.originAddresses;
var destinations = response.destinationAddresses;
var outputDiv = document.getElementById('outputDiv');
outputDiv.innerHTML = '';
deleteOverlays();
for (var i = 0; i < origins.length; i++) {
var results = response.rows[i].elements;
addMarker(origins[i], false);
for (var j = 0; j < results.length; j++) {
addMarker(destinations[j], true);
outputDiv.innerHTML += 'Tegnestuen' + ' til ' + destinations[j]
+ ': ' + results[j].distance.text;
}
}
}
}
function addMarker(location, isDestination) {
var icon;
if (isDestination) {
icon = destinationIcon;
} else {
icon = originIcon;
}
geocoder.geocode({'address': location}, function(results, status) {
if (status == google.maps.GeocoderStatus.OK) {
bounds.extend(results[0].geometry.location);
map.fitBounds(bounds);
var marker = new google.maps.Marker({
map: map,
position: results[0].geometry.location,
icon: icon
});
markersArray.push(marker);
} else {
alert('Geocode was not successful for the following reason: '
+ status);
}
});
}
function deleteOverlays() {
for (var i = 0; i < markersArray.length; i++) {
markersArray[i].setMap(null);
}
markersArray = [];
}
google.maps.event.addDomListener(window, 'load', initialize);
</script>
<body>
<div id="outputDiv">
<form id="form1" name="form1" method="post" action="">
date
<input name="date" type="text" value="" id="date"/>
destination
<input name="destination" type="text" value="" id="destination" onchange="calculateDistances();"/>
distance
<input name="distance" type="text" value="" id="distance" />
</form>
</div>
<div id="map-canvas"></div>
</body>
</html>
【问题讨论】：
标签： javascript google-maps-api-3 onchange form-fields