【发布时间】：2016-08-06 09:30:39
【问题描述】：
我是 Javascript 的新手。我有一个项目要制作一个连接到谷歌地图的程序（基于网页）。
我已阅读 developer.google.com 并坚持使用它。 请帮助我，如何加入两个示例代码放置搜索框（https://developers.google.com/maps/documentation/javascript/examples/places-searchbox）和标记删除（https://developers.google.com/maps/documentation/javascript/examples/marker-remove）
谢谢
更新：这是我的代码（暂时）
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="initial-scale=1.0, user-scalable=no">
<meta charset="utf-8">
<title>Places Searchbox</title>
<style>
html, body {
height: 100%;
margin: 0;
padding: 0;
}
#map {
height: 100%;
}
.controls {
margin-top: 10px;
border: 1px solid transparent;
border-radius: 2px 0 0 2px;
box-sizing: border-box;
-moz-box-sizing: border-box;
height: 32px;
outline: none;
box-shadow: 0 2px 6px rgba(0, 0, 0, 0.3);
}
#pac-input {
background-color: #fff;
font-family: Roboto;
font-size: 15px;
font-weight: 300;
margin-left: 12px;
padding: 0 11px 0 13px;
text-overflow: ellipsis;
width: 300px;
}
#pac-input:focus {
border-color: #4d90fe;
}
.pac-container {
font-family: Roboto;
}
#type-selector {
color: #fff;
background-color: #4d90fe;
padding: 5px 11px 0px 11px;
}
#type-selector label {
font-family: Roboto;
font-size: 13px;
font-weight: 300;
}
#target {
width: 345px;
}
#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;
}
</style>
</head>
<body>
<input id="pac-input" class="controls" type="text" placeholder="Search Box">
<div id="floating-panel">
<input onclick="clearMarkers();" type=button value="Hide Markerr">
<input onclick="showMarkers();" type=button value="Show All Markerr">
<input onclick="deleteMarkers();" type=button value="Delete Markerr">
</div>
<div id="map"></div>
<script>
// This example adds a search box to a map, using the Google Place Autocomplete
// feature. People can enter geographical searches. The search box will return a
// pick list containing a mix of places and predicted search terms.
// This example requires the Places library. Include the libraries=places
// parameter when you first load the API. For example:
// <script src="https://maps.googleapis.com/maps/api/js?key=YOUR_API_KEY&libraries=places">
function initAutocomplete() {
var Markerr = [];
var map = new google.maps.Map(document.getElementById('map'), {
center: {lat: -7.266813, lng: 112.770218},
zoom: 13,
mapTypeId: 'roadmap'
});
// Create the search box and link it to the UI element.
var input = document.getElementById('pac-input');
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());
});
var markers = [];
// 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;
}
// Clear out the old markers.
markers.forEach(function(marker) {
marker.setMap(null);
});
markers = [];
// For each place, get the icon, name and location.
var bounds = new google.maps.LatLngBounds();
places.forEach(function(place) {
if (!place.geometry) {
console.log("Returned place contains no geometry");
return;
}
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);
});
// -----------------------------
// This event listener will call addMarker() when the map is clicked.
map.addListener('click', function(event) {
addMarker(event.latLng);
});
// Adds a marker at the center of the map.
addMarker(haightAshbury);
// *********************************
}
// Adds a marker to the map and push to the array.
function addMarker(location) {
var marker = new google.maps.Marker({
position: location,
map: map
});
Markerr.push(marker);
}
// Sets the map on all Markerr in the array.
function setMapOnAll(map) {
for (var i = 0; i < Markerr.length; i++) {
Markerr[i].setMap(map);
}
}
// Removes the Markerr from the map, but keeps them in the array.
function clearMarkers() {
setMapOnAll(null);
}
// Shows any Markerr currently in the array.
function showMarkers() {
setMapOnAll(map);
}
// Deletes all Markerr in the array by removing references to them.
function deleteMarkers() {
clearMarkers();
Markerr = [];
}
</script>
<script src="https://maps.googleapis.com/maps/api/js?key=[API]&libraries=places&callback=initAutocomplete"
async defer></script>
</body>
</html>【问题讨论】：
-
发布的代码出现 javascript 错误：
Uncaught ReferenceError: haightAshbury is not defined -
感谢@geocodezip 的回复。实际上我不确定我是否在正确的笏（在编码时）。你能帮我加入developers.google.com/maps/documentation/javascript/examples/…和developers.google.com/maps/documentation/javascript/examples/…的代码吗？谢谢你
标签： javascript google-maps google-maps-api-3