添加到 Gmaps 方向元素
Prepend to Gmaps directions element
我正在使用 Google 地图 JavaScript API 并且我想将短语 "Starting From" 添加到“.adp-placemark” class 包含在 Google:
输出的方向中
$('.adp-placemark').prepend('Starting From:');
前缀无效。但是,如果我查看页面并在 Inspector 中使用控制台工具,然后 运行 上面的代码将按原样添加。
我该把代码放在哪里?我也试过将它放在一个单独的函数中并准备好在文档中。
function initMap() {
var directionsDisplay = new google.maps.DirectionsRenderer;
var directionsService = new google.maps.DirectionsService;
var map = new google.maps.Map(document.getElementById('map'), {
zoom: 7,
center: {lat: 41.85, lng: -87.65}
});
directionsDisplay.setMap(map);
directionsDisplay.setPanel(document.getElementById('right-panel'));
var control = document.getElementById('floating-panel');
control.style.display = 'block';
map.controls[google.maps.ControlPosition.TOP_CENTER].push(control);
var onChangeHandler = function() {
calculateAndDisplayRoute(directionsService, directionsDisplay);
};
document.getElementById('start').addEventListener('change', onChangeHandler);
document.getElementById('end').addEventListener('change', onChangeHandler);
}
function calculateAndDisplayRoute(directionsService, directionsDisplay) {
var start = document.getElementById('start').value;
var end = document.getElementById('end').value;
directionsService.route({
origin: start,
destination: end,
travelMode: 'DRIVING'
}, function(response, status) {
if (status === 'OK') {
directionsDisplay.setDirections(response);
$('.adp-placemark').prepend('Starting From:');
} else {
window.alert('Directions request failed due to ' + status);
}
});
}
html, body {
height: 100%;
margin: 0;
padding: 0;
}
#map {
height: 100%;
}
#floating-panel {
position: absolute;
top: 10px;
left: 25%;
z-index: 5;
background-color: #fff;
padding: 5px;
border: 1px solid #999;
text-align: center;
font-family: 'Roboto','sans-serif';
line-height: 30px;
padding-left: 10px;
}
#right-panel {
font-family: 'Roboto','sans-serif';
line-height: 30px;
padding-left: 10px;
}
#right-panel select, #right-panel input {
font-size: 15px;
}
#right-panel select {
width: 100%;
}
#right-panel i {
font-size: 12px;
}
#right-panel {
height: 100%;
float: right;
width: 390px;
overflow: auto;
}
#map {
margin-right: 400px;
}
#floating-panel {
background: #fff;
padding: 5px;
font-size: 14px;
font-family: Arial;
border: 1px solid #ccc;
box-shadow: 0 2px 2px rgba(33, 33, 33, 0.4);
display: none;
}
@media print {
#map {
height: 500px;
margin: 0;
}
#right-panel {
float: none;
width: auto;
}
}
<div id="floating-panel">
<strong>Start:</strong>
<select id="start">
<option value="chicago, il">Chicago</option>
<option value="st louis, mo">St Louis</option>
<option value="joplin, mo">Joplin, MO</option>
<option value="oklahoma city, ok">Oklahoma City</option>
<option value="amarillo, tx">Amarillo</option>
<option value="gallup, nm">Gallup, NM</option>
<option value="flagstaff, az">Flagstaff, AZ</option>
<option value="winona, az">Winona</option>
<option value="kingman, az">Kingman</option>
<option value="barstow, ca">Barstow</option>
<option value="san bernardino, ca">San Bernardino</option>
<option value="los angeles, ca">Los Angeles</option>
</select>
<br>
<strong>End:</strong>
<select id="end">
<option value="chicago, il">Chicago</option>
<option value="st louis, mo">St Louis</option>
<option value="joplin, mo">Joplin, MO</option>
<option value="oklahoma city, ok">Oklahoma City</option>
<option value="amarillo, tx">Amarillo</option>
<option value="gallup, nm">Gallup, NM</option>
<option value="flagstaff, az">Flagstaff, AZ</option>
<option value="winona, az">Winona</option>
<option value="kingman, az">Kingman</option>
<option value="barstow, ca">Barstow</option>
<option value="san bernardino, ca">San Bernardino</option>
<option value="los angeles, ca">Los Angeles</option>
</select>
</div>
<div id="right-panel"></div>
<div id="map"></div>
<!-- Replace the value of the key parameter with your own API key. -->
<script async defer
src="https://maps.googleapis.com/maps/api/js?sensor=false&callback=initMap">
</script>
您需要等待侧面板被渲染(Google 地图 Javascript API 是事件驱动和异步的。在前置操作周围添加一个 setTimeout
是可行的(证明了这个概念,尽管它很笨拙):
setTimeout(function() {
$('.adp-placemark').prepend('Starting From:');
}, 500);
(您还需要将 jQuery 添加到您的代码片段中才能使其正常工作...)
这会导致浏览器将前置操作延迟到侧面板渲染完成之后。
function initMap() {
var directionsDisplay = new google.maps.DirectionsRenderer;
var directionsService = new google.maps.DirectionsService;
var map = new google.maps.Map(document.getElementById('map'), {
zoom: 7,
center: {
lat: 41.85,
lng: -87.65
}
});
directionsDisplay.setMap(map);
directionsDisplay.setPanel(document.getElementById('right-panel'));
var control = document.getElementById('floating-panel');
control.style.display = 'block';
map.controls[google.maps.ControlPosition.TOP_CENTER].push(control);
var onChangeHandler = function() {
calculateAndDisplayRoute(directionsService, directionsDisplay);
};
document.getElementById('start').addEventListener('change', onChangeHandler);
document.getElementById('end').addEventListener('change', onChangeHandler);
}
function calculateAndDisplayRoute(directionsService, directionsDisplay) {
var start = document.getElementById('start').value;
var end = document.getElementById('end').value;
directionsService.route({
origin: start,
destination: end,
travelMode: 'DRIVING'
}, function(response, status) {
if (status === 'OK') {
directionsDisplay.setDirections(response);
setTimeout(function() {
$('.adp-placemark').prepend('Starting From:');
}, 500);
} else {
window.alert('Directions request failed due to ' + status);
}
});
}
html,
body {
height: 100%;
margin: 0;
padding: 0;
}
#map {
height: 100%;
}
#floating-panel {
position: absolute;
top: 10px;
left: 25%;
z-index: 5;
background-color: #fff;
padding: 5px;
border: 1px solid #999;
text-align: center;
font-family: 'Roboto', 'sans-serif';
line-height: 30px;
padding-left: 10px;
}
#right-panel {
font-family: 'Roboto', 'sans-serif';
line-height: 30px;
padding-left: 10px;
}
#right-panel select,
#right-panel input {
font-size: 15px;
}
#right-panel select {
width: 100%;
}
#right-panel i {
font-size: 12px;
}
#right-panel {
height: 100%;
float: right;
width: 390px;
overflow: auto;
}
#map {
margin-right: 400px;
}
#floating-panel {
background: #fff;
padding: 5px;
font-size: 14px;
font-family: Arial;
border: 1px solid #ccc;
box-shadow: 0 2px 2px rgba(33, 33, 33, 0.4);
display: none;
}
@media print {
#map {
height: 500px;
margin: 0;
}
#right-panel {
float: none;
width: auto;
}
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="floating-panel">
<strong>Start:</strong>
<select id="start">
<option value="chicago, il">Chicago</option>
<option value="st louis, mo">St Louis</option>
<option value="joplin, mo">Joplin, MO</option>
<option value="oklahoma city, ok">Oklahoma City</option>
<option value="amarillo, tx">Amarillo</option>
<option value="gallup, nm">Gallup, NM</option>
<option value="flagstaff, az">Flagstaff, AZ</option>
<option value="winona, az">Winona</option>
<option value="kingman, az">Kingman</option>
<option value="barstow, ca">Barstow</option>
<option value="san bernardino, ca">San Bernardino</option>
<option value="los angeles, ca">Los Angeles</option>
</select>
<br>
<strong>End:</strong>
<select id="end">
<option value="chicago, il">Chicago</option>
<option value="st louis, mo">St Louis</option>
<option value="joplin, mo">Joplin, MO</option>
<option value="oklahoma city, ok">Oklahoma City</option>
<option value="amarillo, tx">Amarillo</option>
<option value="gallup, nm">Gallup, NM</option>
<option value="flagstaff, az">Flagstaff, AZ</option>
<option value="winona, az">Winona</option>
<option value="kingman, az">Kingman</option>
<option value="barstow, ca">Barstow</option>
<option value="san bernardino, ca">San Bernardino</option>
<option value="los angeles, ca">Los Angeles</option>
</select>
</div>
<div id="right-panel"></div>
<div id="map"></div>
<!-- Replace the value of the key parameter with your own API key. -->
<script async defer src="https://maps.googleapis.com/maps/api/js?sensor=false&callback=initMap">
</script>
编辑: 如评论中所述,第一个解决方案不完整,因为 'Starting from:' 被添加到两个 table 中(我错过了第一个时间)
为了仅使用 CSS 来解决它,您可以添加 nth-child(n)
选择器来查找 .adp-placemark
您用来包含前置文本的内容,如下所示:
/* Pseudo-element to add 'Starting from:' to the first element that appears */
.adp > div:nth-child(2) .adp-placemark::before {
content: 'Starting from:';
white-space: nowrap;
}
/* Pseudo-element to add 'Going to:' to the second element that appears */
.adp > div:nth-child(3) .adp-placemark::before {
content: 'Going to:';
white-space: nowrap;
}
另一方面 因为 right-panel
代码是由 Google 地图生成的 Api 我不会尝试以编程方式更改生成的 HTML,因为最终 API 可能会提供不同的结构,这会使解决方案失败(js
或 css
中的解决方案)。
解决此 问题 的一种方法是在 .adp-placemark
中包含一个 css 伪 class,删除需要获得 table 渲染的 timing,像这样:
.adp-placemark::before {
content: 'Starting from:';
white-space: nowrap;
}
我还更新了您的代码段:
function initMap() {
var directionsDisplay = new google.maps.DirectionsRenderer;
var directionsService = new google.maps.DirectionsService;
var map = new google.maps.Map(document.getElementById('map'), {
zoom: 7,
center: {lat: 41.85, lng: -87.65}
});
directionsDisplay.setMap(map);
directionsDisplay.setPanel(document.getElementById('right-panel'));
var control = document.getElementById('floating-panel');
control.style.display = 'block';
map.controls[google.maps.ControlPosition.TOP_CENTER].push(control);
var onChangeHandler = function() {
calculateAndDisplayRoute(directionsService, directionsDisplay);
};
document.getElementById('start').addEventListener('change', onChangeHandler);
document.getElementById('end').addEventListener('change', onChangeHandler);
}
function calculateAndDisplayRoute(directionsService, directionsDisplay) {
var start = document.getElementById('start').value;
var end = document.getElementById('end').value;
directionsService.route({
origin: start,
destination: end,
travelMode: 'DRIVING'
}, function(response, status) {
if (status === 'OK') {
directionsDisplay.setDirections(response);
$('.adp-placemark').prepend('Starting From:');
} else {
window.alert('Directions request failed due to ' + status);
}
});
}
html, body {
height: 100%;
margin: 0;
padding: 0;
}
#map {
height: 100%;
}
#floating-panel {
position: absolute;
top: 10px;
left: 25%;
z-index: 5;
background-color: #fff;
padding: 5px;
border: 1px solid #999;
text-align: center;
font-family: 'Roboto','sans-serif';
line-height: 30px;
padding-left: 10px;
}
#right-panel {
font-family: 'Roboto','sans-serif';
line-height: 30px;
padding-left: 10px;
}
#right-panel select, #right-panel input {
font-size: 15px;
}
#right-panel select {
width: 100%;
}
#right-panel i {
font-size: 12px;
}
#right-panel {
height: 100%;
float: right;
width: 390px;
overflow: auto;
}
#map {
margin-right: 400px;
}
#floating-panel {
background: #fff;
padding: 5px;
font-size: 14px;
font-family: Arial;
border: 1px solid #ccc;
box-shadow: 0 2px 2px rgba(33, 33, 33, 0.4);
display: none;
}
/* Pseudo-element to add 'Starting from:' to the first element that appears */
.adp > div:nth-child(2) .adp-placemark::before {
content: 'Starting from:';
white-space: nowrap;
}
/* Pseudo-element to add 'Going to:' to the second element that appears */
.adp > div:nth-child(3) .adp-placemark::before {
content: 'Going to:';
white-space: nowrap;
}
@media print {
#map {
height: 500px;
margin: 0;
}
#right-panel {
float: none;
width: auto;
}
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="floating-panel">
<strong>Start:</strong>
<select id="start">
<option value="chicago, il">Chicago</option>
<option value="st louis, mo">St Louis</option>
<option value="joplin, mo">Joplin, MO</option>
<option value="oklahoma city, ok">Oklahoma City</option>
<option value="amarillo, tx">Amarillo</option>
<option value="gallup, nm">Gallup, NM</option>
<option value="flagstaff, az">Flagstaff, AZ</option>
<option value="winona, az">Winona</option>
<option value="kingman, az">Kingman</option>
<option value="barstow, ca">Barstow</option>
<option value="san bernardino, ca">San Bernardino</option>
<option value="los angeles, ca">Los Angeles</option>
</select>
<br>
<strong>End:</strong>
<select id="end">
<option value="chicago, il">Chicago</option>
<option value="st louis, mo">St Louis</option>
<option value="joplin, mo">Joplin, MO</option>
<option value="oklahoma city, ok">Oklahoma City</option>
<option value="amarillo, tx">Amarillo</option>
<option value="gallup, nm">Gallup, NM</option>
<option value="flagstaff, az">Flagstaff, AZ</option>
<option value="winona, az">Winona</option>
<option value="kingman, az">Kingman</option>
<option value="barstow, ca">Barstow</option>
<option value="san bernardino, ca">San Bernardino</option>
<option value="los angeles, ca">Los Angeles</option>
</select>
</div>
<div id="right-panel"></div>
<div id="map"></div>
<!-- Replace the value of the key parameter with your own API key. -->
<script async defer
src="https://maps.googleapis.com/maps/api/js?sensor=false&callback=initMap">
</script>
希望对您有所帮助,
干杯。
我正在使用 Google 地图 JavaScript API 并且我想将短语 "Starting From" 添加到“.adp-placemark” class 包含在 Google:
输出的方向中$('.adp-placemark').prepend('Starting From:');
前缀无效。但是,如果我查看页面并在 Inspector 中使用控制台工具,然后 运行 上面的代码将按原样添加。
我该把代码放在哪里?我也试过将它放在一个单独的函数中并准备好在文档中。
function initMap() {
var directionsDisplay = new google.maps.DirectionsRenderer;
var directionsService = new google.maps.DirectionsService;
var map = new google.maps.Map(document.getElementById('map'), {
zoom: 7,
center: {lat: 41.85, lng: -87.65}
});
directionsDisplay.setMap(map);
directionsDisplay.setPanel(document.getElementById('right-panel'));
var control = document.getElementById('floating-panel');
control.style.display = 'block';
map.controls[google.maps.ControlPosition.TOP_CENTER].push(control);
var onChangeHandler = function() {
calculateAndDisplayRoute(directionsService, directionsDisplay);
};
document.getElementById('start').addEventListener('change', onChangeHandler);
document.getElementById('end').addEventListener('change', onChangeHandler);
}
function calculateAndDisplayRoute(directionsService, directionsDisplay) {
var start = document.getElementById('start').value;
var end = document.getElementById('end').value;
directionsService.route({
origin: start,
destination: end,
travelMode: 'DRIVING'
}, function(response, status) {
if (status === 'OK') {
directionsDisplay.setDirections(response);
$('.adp-placemark').prepend('Starting From:');
} else {
window.alert('Directions request failed due to ' + status);
}
});
}
html, body {
height: 100%;
margin: 0;
padding: 0;
}
#map {
height: 100%;
}
#floating-panel {
position: absolute;
top: 10px;
left: 25%;
z-index: 5;
background-color: #fff;
padding: 5px;
border: 1px solid #999;
text-align: center;
font-family: 'Roboto','sans-serif';
line-height: 30px;
padding-left: 10px;
}
#right-panel {
font-family: 'Roboto','sans-serif';
line-height: 30px;
padding-left: 10px;
}
#right-panel select, #right-panel input {
font-size: 15px;
}
#right-panel select {
width: 100%;
}
#right-panel i {
font-size: 12px;
}
#right-panel {
height: 100%;
float: right;
width: 390px;
overflow: auto;
}
#map {
margin-right: 400px;
}
#floating-panel {
background: #fff;
padding: 5px;
font-size: 14px;
font-family: Arial;
border: 1px solid #ccc;
box-shadow: 0 2px 2px rgba(33, 33, 33, 0.4);
display: none;
}
@media print {
#map {
height: 500px;
margin: 0;
}
#right-panel {
float: none;
width: auto;
}
}
<div id="floating-panel">
<strong>Start:</strong>
<select id="start">
<option value="chicago, il">Chicago</option>
<option value="st louis, mo">St Louis</option>
<option value="joplin, mo">Joplin, MO</option>
<option value="oklahoma city, ok">Oklahoma City</option>
<option value="amarillo, tx">Amarillo</option>
<option value="gallup, nm">Gallup, NM</option>
<option value="flagstaff, az">Flagstaff, AZ</option>
<option value="winona, az">Winona</option>
<option value="kingman, az">Kingman</option>
<option value="barstow, ca">Barstow</option>
<option value="san bernardino, ca">San Bernardino</option>
<option value="los angeles, ca">Los Angeles</option>
</select>
<br>
<strong>End:</strong>
<select id="end">
<option value="chicago, il">Chicago</option>
<option value="st louis, mo">St Louis</option>
<option value="joplin, mo">Joplin, MO</option>
<option value="oklahoma city, ok">Oklahoma City</option>
<option value="amarillo, tx">Amarillo</option>
<option value="gallup, nm">Gallup, NM</option>
<option value="flagstaff, az">Flagstaff, AZ</option>
<option value="winona, az">Winona</option>
<option value="kingman, az">Kingman</option>
<option value="barstow, ca">Barstow</option>
<option value="san bernardino, ca">San Bernardino</option>
<option value="los angeles, ca">Los Angeles</option>
</select>
</div>
<div id="right-panel"></div>
<div id="map"></div>
<!-- Replace the value of the key parameter with your own API key. -->
<script async defer
src="https://maps.googleapis.com/maps/api/js?sensor=false&callback=initMap">
</script>
您需要等待侧面板被渲染(Google 地图 Javascript API 是事件驱动和异步的。在前置操作周围添加一个 setTimeout
是可行的(证明了这个概念,尽管它很笨拙):
setTimeout(function() {
$('.adp-placemark').prepend('Starting From:');
}, 500);
(您还需要将 jQuery 添加到您的代码片段中才能使其正常工作...) 这会导致浏览器将前置操作延迟到侧面板渲染完成之后。
function initMap() {
var directionsDisplay = new google.maps.DirectionsRenderer;
var directionsService = new google.maps.DirectionsService;
var map = new google.maps.Map(document.getElementById('map'), {
zoom: 7,
center: {
lat: 41.85,
lng: -87.65
}
});
directionsDisplay.setMap(map);
directionsDisplay.setPanel(document.getElementById('right-panel'));
var control = document.getElementById('floating-panel');
control.style.display = 'block';
map.controls[google.maps.ControlPosition.TOP_CENTER].push(control);
var onChangeHandler = function() {
calculateAndDisplayRoute(directionsService, directionsDisplay);
};
document.getElementById('start').addEventListener('change', onChangeHandler);
document.getElementById('end').addEventListener('change', onChangeHandler);
}
function calculateAndDisplayRoute(directionsService, directionsDisplay) {
var start = document.getElementById('start').value;
var end = document.getElementById('end').value;
directionsService.route({
origin: start,
destination: end,
travelMode: 'DRIVING'
}, function(response, status) {
if (status === 'OK') {
directionsDisplay.setDirections(response);
setTimeout(function() {
$('.adp-placemark').prepend('Starting From:');
}, 500);
} else {
window.alert('Directions request failed due to ' + status);
}
});
}
html,
body {
height: 100%;
margin: 0;
padding: 0;
}
#map {
height: 100%;
}
#floating-panel {
position: absolute;
top: 10px;
left: 25%;
z-index: 5;
background-color: #fff;
padding: 5px;
border: 1px solid #999;
text-align: center;
font-family: 'Roboto', 'sans-serif';
line-height: 30px;
padding-left: 10px;
}
#right-panel {
font-family: 'Roboto', 'sans-serif';
line-height: 30px;
padding-left: 10px;
}
#right-panel select,
#right-panel input {
font-size: 15px;
}
#right-panel select {
width: 100%;
}
#right-panel i {
font-size: 12px;
}
#right-panel {
height: 100%;
float: right;
width: 390px;
overflow: auto;
}
#map {
margin-right: 400px;
}
#floating-panel {
background: #fff;
padding: 5px;
font-size: 14px;
font-family: Arial;
border: 1px solid #ccc;
box-shadow: 0 2px 2px rgba(33, 33, 33, 0.4);
display: none;
}
@media print {
#map {
height: 500px;
margin: 0;
}
#right-panel {
float: none;
width: auto;
}
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="floating-panel">
<strong>Start:</strong>
<select id="start">
<option value="chicago, il">Chicago</option>
<option value="st louis, mo">St Louis</option>
<option value="joplin, mo">Joplin, MO</option>
<option value="oklahoma city, ok">Oklahoma City</option>
<option value="amarillo, tx">Amarillo</option>
<option value="gallup, nm">Gallup, NM</option>
<option value="flagstaff, az">Flagstaff, AZ</option>
<option value="winona, az">Winona</option>
<option value="kingman, az">Kingman</option>
<option value="barstow, ca">Barstow</option>
<option value="san bernardino, ca">San Bernardino</option>
<option value="los angeles, ca">Los Angeles</option>
</select>
<br>
<strong>End:</strong>
<select id="end">
<option value="chicago, il">Chicago</option>
<option value="st louis, mo">St Louis</option>
<option value="joplin, mo">Joplin, MO</option>
<option value="oklahoma city, ok">Oklahoma City</option>
<option value="amarillo, tx">Amarillo</option>
<option value="gallup, nm">Gallup, NM</option>
<option value="flagstaff, az">Flagstaff, AZ</option>
<option value="winona, az">Winona</option>
<option value="kingman, az">Kingman</option>
<option value="barstow, ca">Barstow</option>
<option value="san bernardino, ca">San Bernardino</option>
<option value="los angeles, ca">Los Angeles</option>
</select>
</div>
<div id="right-panel"></div>
<div id="map"></div>
<!-- Replace the value of the key parameter with your own API key. -->
<script async defer src="https://maps.googleapis.com/maps/api/js?sensor=false&callback=initMap">
</script>
编辑: 如评论中所述,第一个解决方案不完整,因为 'Starting from:' 被添加到两个 table 中(我错过了第一个时间)
为了仅使用 CSS 来解决它,您可以添加 nth-child(n)
选择器来查找 .adp-placemark
您用来包含前置文本的内容,如下所示:
/* Pseudo-element to add 'Starting from:' to the first element that appears */
.adp > div:nth-child(2) .adp-placemark::before {
content: 'Starting from:';
white-space: nowrap;
}
/* Pseudo-element to add 'Going to:' to the second element that appears */
.adp > div:nth-child(3) .adp-placemark::before {
content: 'Going to:';
white-space: nowrap;
}
另一方面 因为 right-panel
代码是由 Google 地图生成的 Api 我不会尝试以编程方式更改生成的 HTML,因为最终 API 可能会提供不同的结构,这会使解决方案失败(js
或 css
中的解决方案)。
解决此 问题 的一种方法是在 .adp-placemark
中包含一个 css 伪 class,删除需要获得 table 渲染的 timing,像这样:
.adp-placemark::before {
content: 'Starting from:';
white-space: nowrap;
}
我还更新了您的代码段:
function initMap() {
var directionsDisplay = new google.maps.DirectionsRenderer;
var directionsService = new google.maps.DirectionsService;
var map = new google.maps.Map(document.getElementById('map'), {
zoom: 7,
center: {lat: 41.85, lng: -87.65}
});
directionsDisplay.setMap(map);
directionsDisplay.setPanel(document.getElementById('right-panel'));
var control = document.getElementById('floating-panel');
control.style.display = 'block';
map.controls[google.maps.ControlPosition.TOP_CENTER].push(control);
var onChangeHandler = function() {
calculateAndDisplayRoute(directionsService, directionsDisplay);
};
document.getElementById('start').addEventListener('change', onChangeHandler);
document.getElementById('end').addEventListener('change', onChangeHandler);
}
function calculateAndDisplayRoute(directionsService, directionsDisplay) {
var start = document.getElementById('start').value;
var end = document.getElementById('end').value;
directionsService.route({
origin: start,
destination: end,
travelMode: 'DRIVING'
}, function(response, status) {
if (status === 'OK') {
directionsDisplay.setDirections(response);
$('.adp-placemark').prepend('Starting From:');
} else {
window.alert('Directions request failed due to ' + status);
}
});
}
html, body {
height: 100%;
margin: 0;
padding: 0;
}
#map {
height: 100%;
}
#floating-panel {
position: absolute;
top: 10px;
left: 25%;
z-index: 5;
background-color: #fff;
padding: 5px;
border: 1px solid #999;
text-align: center;
font-family: 'Roboto','sans-serif';
line-height: 30px;
padding-left: 10px;
}
#right-panel {
font-family: 'Roboto','sans-serif';
line-height: 30px;
padding-left: 10px;
}
#right-panel select, #right-panel input {
font-size: 15px;
}
#right-panel select {
width: 100%;
}
#right-panel i {
font-size: 12px;
}
#right-panel {
height: 100%;
float: right;
width: 390px;
overflow: auto;
}
#map {
margin-right: 400px;
}
#floating-panel {
background: #fff;
padding: 5px;
font-size: 14px;
font-family: Arial;
border: 1px solid #ccc;
box-shadow: 0 2px 2px rgba(33, 33, 33, 0.4);
display: none;
}
/* Pseudo-element to add 'Starting from:' to the first element that appears */
.adp > div:nth-child(2) .adp-placemark::before {
content: 'Starting from:';
white-space: nowrap;
}
/* Pseudo-element to add 'Going to:' to the second element that appears */
.adp > div:nth-child(3) .adp-placemark::before {
content: 'Going to:';
white-space: nowrap;
}
@media print {
#map {
height: 500px;
margin: 0;
}
#right-panel {
float: none;
width: auto;
}
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="floating-panel">
<strong>Start:</strong>
<select id="start">
<option value="chicago, il">Chicago</option>
<option value="st louis, mo">St Louis</option>
<option value="joplin, mo">Joplin, MO</option>
<option value="oklahoma city, ok">Oklahoma City</option>
<option value="amarillo, tx">Amarillo</option>
<option value="gallup, nm">Gallup, NM</option>
<option value="flagstaff, az">Flagstaff, AZ</option>
<option value="winona, az">Winona</option>
<option value="kingman, az">Kingman</option>
<option value="barstow, ca">Barstow</option>
<option value="san bernardino, ca">San Bernardino</option>
<option value="los angeles, ca">Los Angeles</option>
</select>
<br>
<strong>End:</strong>
<select id="end">
<option value="chicago, il">Chicago</option>
<option value="st louis, mo">St Louis</option>
<option value="joplin, mo">Joplin, MO</option>
<option value="oklahoma city, ok">Oklahoma City</option>
<option value="amarillo, tx">Amarillo</option>
<option value="gallup, nm">Gallup, NM</option>
<option value="flagstaff, az">Flagstaff, AZ</option>
<option value="winona, az">Winona</option>
<option value="kingman, az">Kingman</option>
<option value="barstow, ca">Barstow</option>
<option value="san bernardino, ca">San Bernardino</option>
<option value="los angeles, ca">Los Angeles</option>
</select>
</div>
<div id="right-panel"></div>
<div id="map"></div>
<!-- Replace the value of the key parameter with your own API key. -->
<script async defer
src="https://maps.googleapis.com/maps/api/js?sensor=false&callback=initMap">
</script>
希望对您有所帮助, 干杯。