我有一个Google搜索和显示标记的示例。我试图让Google显示标记地图，然后搜索用户输入城市或拉链的搜索栏，并用标记显示该区域。我关注，在Google地图中存储定位器，输入邮政编码和显示在地图和侧边栏上的显示标记
一切都很好，但是当地图首次加载时，它不会显示任何标记。仅在搜索时。我一直都需要这些标记。
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta name="viewport" content="initial-scale=1.0, user-scalable=no" />
<meta http-equiv="content-type" content="text/html; charset=UTF-8"/>
<title>Store Locate</title>
<script type="text/javascript" src="https://maps.googleapis.com/maps/api/js?v=3.exp&signed_in=false&libraries=places&key=AIzaSyDOorkShHO1xhw2zbjz-OZdSKP-xQ65AS0"></script>
<style>
#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: 400px;
}
#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;
}
</style>
<script type="text/javascript">
var side_bar_html = "";
// arrays to hold copies of the markers and html used by the side_bar
var gmarkers = [];
var marker;
var map = null;
var t=1;
function initialize() {
// create the map
var myOptions = {
center: new google.maps.LatLng(35.467560, -97.516428),
zoom:6,
disableDefaultUI: true,
mapTypeId: google.maps.MapTypeId.ROADMAP
}
map = new google.maps.Map(document.getElementById("map_canvas"),myOptions);
google.maps.event.addListener(map, 'click', function() {
infowindow.close();
});
initSearchBox(map, 'pac-input');
}//----------------INIT END--------------------
var infowindow = new google.maps.InfoWindow(
{
size: new google.maps.Size(150,50)
});
// This function picks up the click and opens the corresponding info window
function myclick(i) {
google.maps.event.trigger(gmarkers[i], "click");
}
function initSearchBox(map, controlId) {
// Create the search box and link it to the UI element.
var input = (document.getElementById(controlId));
map.controls[google.maps.ControlPosition.TOP_LEFT].push(input);
var searchBox = new google.maps.places.SearchBox(input);
// [START region_getplaces]
// Listen for the event fired when the user selects an item from the
// pick list. Retrieve the matching places for that item.
google.maps.event.addListener(searchBox, 'places_changed', function () {
var places = searchBox.getPlaces();
if (places.length == 0) {
return;
}
//get first place
var place = places[0];
var infowindow = new google.maps.InfoWindow(
{
size: new google.maps.Size(150,50),
content : place.info
});
// Add markers to the map
// Set up the markers with info windows
// add the points
var point = new google.maps.LatLng(35.979088,-96.112985);
var marker = createMarker(point,"Firestone, Oklahoma City<br>211 411 2311")
var point = new google.maps.LatLng(38.0409333,23.7954601);
var marker = createMarker(point,"Nespresso S.A.","<b>Nespresso S.A.</b><br>Agiou Thoma 27,15124,Marousi")
var point = new google.maps.LatLng(38.0473031,23.8053483);
var marker = createMarker(point,"Regency Entertainment","<b>Regency Entertainment</b><br>Agiou Konstantinou 49,15124,Marousi <br>210 614 9800")
var point = new google.maps.LatLng(38.050986,23.8084322);
var marker = createMarker(point,"Just4U","<b>Just4U</b> <br>Dimitriou Gounari 84, 15124, Marousi<br>210 614 1923")
var point = new google.maps.LatLng(38.0400533,23.8011982);
var marker = createMarker(point,"Ekka Cars S.A.","<b>Ekka</b> <br>Leoforos Kifisias 79,15124,Marousi<br>210 349 8000")
// put the assembled side_bar_html contents into the side_bar div
document.getElementById("side_bar").innerHTML = side_bar_html;
t -=1;//This is so if you search again, it doesn't display again in sidebar
map.fitBounds(place.geometry.viewport);
});
}
// A function to create the marker and set up the event window function
function createMarker(latlng, name, html) {
var contentString = html;
var marker = new google.maps.Marker({
position: latlng,
map: map,
//zIndex: Math.round(latlng.lat()*-100000)<<5
});
google.maps.event.addListener(marker, 'click', function() {
infowindow.setContent(contentString);
infowindow.open(map,marker);
});
// save the info we need to use later for the side_bar
gmarkers.push(marker);
// add a line to the side_bar html
side_bar_html += '<a href="javascript:myclick(' + (gmarkers.length-1) + ')">' + name + '</a><br>';
}
google.maps.event.addDomListener(window, 'load', initialize);
</script>
</head>
<body style="margin:0px; padding:0px;" >
<input id="pac-input" class="controls" type="text" placeholder="City, State or Zip Code">
<div id="map_canvas" style="width: 550px; height: 450px"></div>
</body>
</html>
那是因为您在places_changed事件中添加标记。只需将标记创建代码移入initialize函数中。
var point = new google.maps.LatLng(35.979088,-96.112985);
var marker = createMarker(point,"Firestone, Oklahoma City<br>211 411 2311");
var point = new google.maps.LatLng(38.0409333,23.7954601);
var marker = createMarker(point,"Nespresso S.A.","<b>Nespresso S.A.</b><br>Agiou Thoma 27,15124,Marousi");
var point = new google.maps.LatLng(38.0473031,23.8053483);
var marker = createMarker(point,"Regency Entertainment","<b>Regency Entertainment</b><br>Agiou Konstantinou 49,15124,Marousi <br>210 614 9800");
var point = new google.maps.LatLng(38.050986,23.8084322);
var marker = createMarker(point,"Just4U","<b>Just4U</b> <br>Dimitriou Gounari 84, 15124, Marousi<br>210 614 1923");
var point = new google.maps.LatLng(38.0400533,23.8011982);
var marker = createMarker(point,"Ekka Cars S.A.","<b>Ekka</b> <br>Leoforos Kifisias 79,15124,Marousi<br>210 349 8000");
您也不需要每次进行var来更新您的点和标记。
var point = new google.maps.LatLng(35.979088,-96.112985);
var marker = createMarker(point,"Firestone, Oklahoma City<br>211 411 2311");
point = new google.maps.LatLng(38.0409333,23.7954601);
marker = createMarker(point,"Nespresso S.A.","<b>Nespresso S.A.</b><br>Agiou Thoma 27,15124,Marousi");
point = new google.maps.LatLng(38.0473031,23.8053483);
marker = createMarker(point,"Regency Entertainment","<b>Regency Entertainment</b><br>Agiou Konstantinou 49,15124,Marousi <br>210 614 9800");
point = new google.maps.LatLng(38.050986,23.8084322);
marker = createMarker(point,"Just4U","<b>Just4U</b> <br>Dimitriou Gounari 84, 15124, Marousi<br>210 614 1923");
point = new google.maps.LatLng(38.0400533,23.8011982);
marker = createMarker(point,"Ekka Cars S.A.","<b>Ekka</b> <br>Leoforos Kifisias 79,15124,Marousi<br>210 349 8000");
因此您的initialize功能看起来像这样：
function initialize() {
// create the map
var myOptions = {
center: new google.maps.LatLng(35.467560, -97.516428),
zoom:6,
disableDefaultUI: true,
mapTypeId: google.maps.MapTypeId.ROADMAP
}
map = new google.maps.Map(document.getElementById("map_canvas"),myOptions);
google.maps.event.addListener(map, 'click', function() {
infowindow.close();
});
var point = new google.maps.LatLng(35.979088,-96.112985);
var marker = createMarker(point,"Firestone, Oklahoma City<br>211 411 2311");
point = new google.maps.LatLng(38.0409333,23.7954601);
marker = createMarker(point,"Nespresso S.A.","<b>Nespresso S.A.</b><br>Agiou Thoma 27,15124,Marousi");
point = new google.maps.LatLng(38.0473031,23.8053483);
marker = createMarker(point,"Regency Entertainment","<b>Regency Entertainment</b><br>Agiou Konstantinou 49,15124,Marousi <br>210 614 9800");
point = new google.maps.LatLng(38.050986,23.8084322);
marker = createMarker(point,"Just4U","<b>Just4U</b> <br>Dimitriou Gounari 84, 15124, Marousi<br>210 614 1923");
point = new google.maps.LatLng(38.0400533,23.8011982);
marker = createMarker(point,"Ekka Cars S.A.","<b>Ekka</b> <br>Leoforos Kifisias 79,15124,Marousi<br>210 349 8000");
initSearchBox(map, 'pac-input');
}
demo
https://jsfiddle.net/chinleung/x75wkpd0/4/