我按照此链接上的教程：https://developers.google.com/maps/documentation/javascript/examples/directions-complex来创建地图方向。当我在我的地图中将它成本化时，它不起作用。我认为这是因为addEventListener无法正常工作，因为我的错误代码。有人可以帮帮我吗？
关于plunker的演示：https://plnkr.co/edit/FzYTtgv2WriPVRJJMt6S?p=preview
这是我的方向代码：
//direction config starts here
var directionsService = new google.maps.DirectionsService;
// Create a renderer for directions and bind it to the map.
var directionsDisplay = new google.maps.DirectionsRenderer({map: map});
// Instantiate an info window to hold step text.
var stepDisplay = new google.maps.InfoWindow;
// Display the route between the initial start and end selections.
calculateAndDisplayRoute(
directionsDisplay, directionsService, markerArray, stepDisplay, map);
// Listen to change events from the start and end lists.
var onChangeHandler = function() {
calculateAndDisplayRoute(
directionsDisplay, directionsService, markerArray, stepDisplay, map);
};
document.getElementById('start').addEventListener('change', onChangeHandler);
document.getElementById('end').addEventListener('change', onChangeHandler);
function calculateAndDisplayRoute(directionsDisplay, directionsService,
markerArray, stepDisplay, map) {
// First, remove any existing markers from the map.
for (var i = 0; i < markerArray.length; i++) {
markerArray[i].setMap(null);
}}
// Retrieve the start and end locations and create a DirectionsRequest using
// WALKING directions.
directionsService.route({
origin: document.getElementById('start').value,
destination: document.getElementById('end').value,
travelMode: google.maps.TravelMode.WALKING
}, function(response, status) {
// Route the directions and pass the response to a function to create
// markers for each step.
if (status === google.maps.DirectionsStatus.OK) {
document.getElementById('warnings-panel').innerHTML =
'<b>' + response.routes[0].warnings + '</b>';
directionsDisplay.setDirections(response);
showSteps(response, markerArray, stepDisplay, map);
} else {
window.alert('Directions request failed due to ' + status);
}
});
function showSteps(directionResult, markerArray, stepDisplay, map) {
// For each step, place a marker, and add the text to the marker's infowindow.
// Also attach the marker to an array so we can keep track of it and remove it
// when calculating new routes.
var myRoute = directionResult.routes[0].legs[0];
for (var i = 0; i < myRoute.steps.length; i++) {
var markerss = markerArray[i] = markerArray[i] || new google.maps.Marker;
markerss.setMap(map);
markerss.setPosition(myRoute.steps[i].start_location);
attachInstructionText(
stepDisplay, markerss, myRoute.steps[i].instructions, map);
}
}
function attachInstructionText(stepDisplay, markerss, text, map) {
google.maps.event.addListener(markerss, 'click', function() {
// Open an info window when the marker is clicked on, containing the text
// of the step.
stepDisplay.setContent(text);
stepDisplay.open(map, markerss);
});
}
//ends of directions
提前谢谢 -
答案 0 :(得分：0)
calculateAndDisplayRoute()目前只删除标记，但不绘制路径。
修正脚本：
var map;
var markerArray = [];
var markers = [];
var feature = [];
var i, marker,markerss;
var content = '<html> <style type="text/css">.enjoy-css {-webkit-box-sizing: content-box-moz-box-sizing: content-box;box-sizing: content-box; padding: 19px; border: none; -webkit-border-radius: 3px; border-radius: 3px;font: normal 16px/1 "Comic Sans MS", cursive, sans-serif;color: black;-o-text-overflow: ellipsis;text-overflow: ellipsis;background: -webkit-linear-gradient(0deg, rgba(252,234,187,1) 0, rgba(252,205,77,1) 18%, rgba(248,181,0,1) 82%, rgba(251,223,147,1) 100%);background: -moz-linear-gradient(90deg, rgba(252,234,187,1) 0, rgba(252,205,77,1) 18%, rgba(248,181,0,1) 82%, rgba(251,223,147,1) 100%);background: linear-gradient(90deg, rgba(252,234,187,1) 0, rgba(252,205,77,1) 18%, rgba(248,181,0,1) 82%, rgba(251,223,147,1) 100%);background-position: 50% 50%;-webkit-background-origin: padding-box;background-origin: padding-box;-webkit-background-clip: border-box;background-clip: border-box;-webkit-background-size: auto auto;background-size: auto auto;-webkit-box-shadow: 0 0 0 3px rgba(100,103,119,1) inset; box-shadow: 0 0 0 3px rgba(100,103,119,1) inset; -webkit-transform: rotateY(-20.626480624709636deg) ; transform: rotateY(-20.626480624709636deg) ;}</style> <body><br><div class="enjoy-css">';
function initialize() {
//initialize peta
map = new google.maps.Map(document.getElementById('map-canvas'), {
zoom: 16,
center: new google.maps.LatLng(-8.704956, 115.22750),
mapTypeId: google.maps.MapTypeId.ROADMAP,
mapTypeControl: true,
mapTypeControlOptions: {
style: google.maps.MapTypeControlStyle.DROPDOWN_MENU,
position: google.maps.ControlPosition.TOP_CENTER
}
});
//setting traffic layer option.
var trafficLayer = new google.maps.TrafficLayer();
trafficLayer.setMap(map);
//define infowindow
var infowindow = new google.maps.InfoWindow({
content: ''
});
//direction config starts here
var directionsService = new google.maps.DirectionsService;
// Create a renderer for directions and bind it to the map.
var directionsDisplay = new google.maps.DirectionsRenderer({map: map});
// Instantiate an info window to hold step text.
var stepDisplay = new google.maps.InfoWindow;
// Display the route between the initial start and end selections.
calculateAndDisplayRoute(
directionsDisplay, directionsService, markerArray, stepDisplay, map);
// Listen to change events from the start and end lists.
var onChangeHandler = function() {
calculateAndDisplayRoute(
directionsDisplay, directionsService, markerArray, stepDisplay, map);
};
document.getElementById('start').addEventListener('change', onChangeHandler);
document.getElementById('end').addEventListener('change', onChangeHandler);
function calculateAndDisplayRoute(directionsDisplay, directionsService,
markerArray, stepDisplay, map) {
// First, remove any existing markers from the map.
for (var i = 0; i < markerArray.length; i++) {
markerArray[i].setMap(null);
}
// Retrieve the start and end locations and create a DirectionsRequest using
// WALKING directions.
directionsService.route({
origin: document.getElementById('start').value,
destination: document.getElementById('end').value,
travelMode: google.maps.TravelMode.WALKING
}, function(response, status) {
// Route the directions and pass the response to a function to create
// markers for each step.
if (status === google.maps.DirectionsStatus.OK) {
document.getElementById('warnings-panel').innerHTML =
'<b>' + response.routes[0].warnings + '</b>';
directionsDisplay.setDirections(response);
showSteps(response, markerArray, stepDisplay, map);
} else {
window.alert('Directions request failed due to ' + status);
}
});
function showSteps(directionResult, markerArray, stepDisplay, map) {
// For each step, place a marker, and add the text to the marker's infowindow.
// Also attach the marker to an array so we can keep track of it and remove it
// when calculating new routes.
var myRoute = directionResult.routes[0].legs[0];
for (var i = 0; i < myRoute.steps.length; i++) {
var markerss = markerArray[i] = markerArray[i] || new google.maps.Marker;
markerss.setMap(map);
markerss.setPosition(myRoute.steps[i].start_location);
attachInstructionText(
stepDisplay, markerss, myRoute.steps[i].instructions, map);
}
}
function attachInstructionText(stepDisplay, markerss, text, map) {
google.maps.event.addListener(markerss, 'click', function() {
// Open an info window when the marker is clicked on, containing the text
// of the step.
stepDisplay.setContent(text);
stepDisplay.open(map, markerss);
});
}}
//ends of directions
//define searchbox function start here
var input = document.getElementById('locationTextField');
var searchBox = new google.maps.places.SearchBox(input);
map.controls[google.maps.ControlPosition.TOP_LEFT].push(input);
// Bias the SearchBox results towards current map's viewport.
map.addListener('bounds_changed', function() {
searchBox.setBounds(map.getBounds());
});
// Listen for the event fired when the user selects a prediction and retrieve
// more details for that place.
searchBox.addListener('places_changed', function() {
var places = searchBox.getPlaces();
if (places.length == 0) {
return;
}
// For each place, get the icon, name and location.
var bounds = new google.maps.LatLngBounds();
places.forEach(function(place) {
var icon = {
url: place.icon,
size: new google.maps.Size(71, 71),
origin: new google.maps.Point(0, 0),
anchor: new google.maps.Point(17, 34),
scaledSize: new google.maps.Size(25, 25)
};
// Create a marker for each place.
markers.push(new google.maps.Marker({
map: map,
icon: icon,
title: place.name,
position: place.geometry.location
}));
if (place.geometry.viewport) {
// Only geocodes have viewport.
bounds.union(place.geometry.viewport);
} else {
bounds.extend(place.geometry.location);
}
});
map.fitBounds(bounds);
});
var autocomplete = new google.maps.places.Autocomplete(input);
//search box function end here
//define marker icon
var iconBase = 'https://maps.google.com/mapfiles/kml/shapes/';
var icons = {
parking: {
name: 'Parking',
icon: iconBase + 'parking_lot_maps.png'
},
library: {
name: 'Library',
icon: iconBase + 'library_maps.png'
},
info: {
name: 'Info',
icon: iconBase + 'info-i_maps.png'
}
};
/*
function addMarker(feature, map) {
marker = new google.maps.Marker({
position: feature.position,
icon: icons[feature.type].icon,
map: map
});
// marker.category = feature[i]['category'];
marker.setVisible(true);
markers.push(marker);
}*/
// define marker position
var features = [{
position: new google.maps.LatLng(-8.702709, 115.224461),
type: 'info',
title: 'Pusat Informasi Kota',
category: 1
}, {
position: new google.maps.LatLng(-8.704432, 115.230249),
type: 'parking',
title: 'Tempat Parkir Avaliable',
category: 2
}, {
position: new google.maps.LatLng(-8.704442, 115.231239),
type: 'library',
title: 'perpustakaan kota',
category: 3
}, {
position: new google.maps.LatLng(-8.702909, 115.230149),
type: 'parking',
title: 'ini parkir',
category: 2
}, {
position: new google.maps.LatLng(-8.602709, 115.230241),
type: 'library',
title: 'ini perpus',
category: 3
}, {
position: new google.maps.LatLng(-8.402709, 115.230211),
type: 'info',
title: 'ini info',
category: 1
}, {
position: new google.maps.LatLng(-8.402704, 115.230114),
type: 'parking',
title: 'ini parkir',
category: 2
}, {
position: new google.maps.LatLng(-8.401704, 115.130114),
type: 'library',
title: 'ini library',
category: 3
}, {
position: new google.maps.LatLng(-8.401708, 115.130117),
type: 'info',
title: 'ini info',
category: 1
}, {
position: new google.maps.LatLng(-8.401608, 115.130107),
type: 'library',
title: 'ini library 1',
category: 3
}];
//Adding marker into map
for (var i = 0, feature; feature = features[i]; i++) {
marker = new google.maps.Marker({
position: feature.position,
animation: google.maps.Animation.DROP,
icon: icons[feature.type].icon,
map: map
});
marker.category = features[i]['category'];
marker.setVisible(false);
markers.push(marker);
google.maps.event.addListener(marker, 'click', (function(marker, feature) {
return function() {
infowindow.setContent(content + " " + feature['title'] + "</div><br></body</html>");
infowindow.setOptions({
maxWidth: 200
});
infowindow.open(map, marker);
}
})(marker, feature));
}
//define and show floating information on right map
var legend = document.getElementById('legend');
for (var key in icons) {
var type = icons[key];
var name = type.name;
var icon = type.icon;
var div = document.createElement('div');
div.innerHTML = '<img src="' + icon + '"> ' + name;
legend.appendChild(div);
}
map.controls[google.maps.ControlPosition.RIGHT_BOTTOM].push(legend);
//function for hide and show POI info
window.showPOI1 = function(t) {
if (t.is(':checked')) {
//alert('checked');
for (i = 0; i < markers.length; i++) {
if (markers[i].category === 1) {
markers[i].setVisible(true);
markers[i].setAnimation(google.maps.Animation.BOUNCE);
}
}
} else {
infowindow.close();
for (i = 0; i < markers.length; i++) {
if (markers[i].category === 1) {
markers[i].setVisible(false);
}
}
}
}
//function for hide and show POI parking
window.showPOI2 = function(t) {
if (t.is(':checked')) {
//alert('checked');
for (i = 0; i < markers.length; i++) {
if (markers[i].category === 2) {
markers[i].setVisible(true);
markers[i].setAnimation(google.maps.Animation.DROP);
}
}
} else {
infowindow.close();
for (i = 0; i < markers.length; i++) {
if (markers[i].category === 2) {
markers[i].setVisible(false);
}
}
}
}
//function for hide and show POI Library
window.showPOI3 = function(t) {
if (t.is(':checked')) {
for (i = 0; i < markers.length; i++) {
if (markers[i].category === 3) {
markers[i].setVisible(true);
markers[i].setAnimation(google.maps.Animation.DROP);
}
}
} else {
infowindow.close();
for (i = 0; i < markers.length; i++) {
if (markers[i].category === 3) {
markers[i].setVisible(false);
}
}
}
}
onChangeHandler();
}