我正在使用谷歌地图在地图上放置标记。标记的 gps 坐标存储在 mySQL 数据库中。我已经能够在地图上创建标记，所以我想知道当现有标记移动到另一个地方时，如何使用新的纬度和经度更新数据库这是到目前为止我的代码：
现场工作：http ://creativeartbd.com/map/
<script type="text/javascript" src="js/jquery-1.10.2.min.js"></script>
<script type="text/javascript" src="http://maps.googleapis.com/maps/api
/js?sensor=false"></script>
<script type="text/javascript">
$(document).ready(function() {
var mapCenter = new google.maps.LatLng(23.721869, 90.390518); //Google map
Coordinates
var map;
map_initialize(); // initialize google map
//############### Google Map Initialize ##############
function map_initialize()
{
var googleMapOptions =
{
center: mapCenter, // map center
zoom: 15, //zoom level, 0 = earth view to higher value
maxZoom: 15,
minZoom: 5,
zoomControlOptions: {
style: google.maps.ZoomControlStyle.SMALL //zoom control size
},
scaleControl: true, // enable scale control
mapTypeId: google.maps.MapTypeId.ROADMAP // google map type
};
map = new google.maps.Map(document.getElementById("google_map"),
googleMapOptions);
//Load Markers from the XML File, Check (map_process.php)
$.get("map_process.php", function (data) {
$(data).find("marker").each(function () {
var name = $(this).attr('name');
var address = '<p>'+ $(this).attr('address') +'</p>';
var type = $(this).attr('type');
var point = new google.maps.LatLng(parseFloat($(this).attr('latitude')),parseFloat($(this).attr('longitude')));
create_marker(point, name, address, false, false, false, "icons/blue-icon.png");
});
});
//Right Click to Drop a New Marker
google.maps.event.addListener(map, 'rightclick', function(event) {
//Edit form to be displayed with new marker
var EditForm = '<p><div class="marker-edit">'+
'<form action="ajax-save.php" method="POST" name="SaveMarker" id="SaveMarker">'+
'<label for="pName"><span>Place Name :</span><input type="text" name="pName" class="save-name" placeholder="Enter Title" maxlength="40" /></label>'+
'<label for="pDesc"><span>Description :</span><textarea name="pDesc" class="save-desc" placeholder="Enter Address" maxlength="150"></textarea></label>'+
'<label for="pType"><span>Type :</span> <select name="pType" class="save-type"><option value="restaurant">Rastaurant</option><option value="bar">Bar</option>'+
'<option value="house">House</option></select></label>'+
'</form>'+
'</div></p><button name="save-marker" class="save-marker">Save Marker Details</button>';
//Drop a new Marker with our Edit Form
create_marker(event.latLng, 'New Marker', EditForm, true, true, true, "icons/pin_green.png");
});
}
//############### Create Marker Function ##############
function create_marker(MapPos, MapTitle, MapDesc, InfoOpenDefault, DragAble, Removable, iconPath)
{
//new marker
var marker = new google.maps.Marker({
position: MapPos,
map: map,
draggable:true,
animation: google.maps.Animation.DROP,
title:"Hello World!",
icon: iconPath
});
//Content structure of info Window for the Markers
var contentString = $('<div class="marker-info-win">'+
'<div class="marker-inner-win"><span class="info-content">'+
'<h1 class="marker-heading">'+MapTitle+'</h1>'+
MapDesc+
'</span><button name="remove-marker" class="remove-marker" title="Remove Marker">Remove Marker</button>'+
'</div></div>');
//Create an infoWindow
var infowindow = new google.maps.InfoWindow();
//set the content of infoWindow
infowindow.setContent(contentString[0]);
//Find remove button in infoWindow
var removeBtn = contentString.find('button.remove-marker')[0];
var saveBtn = contentString.find('button.save-marker')[0];
//add click listner to remove marker button
google.maps.event.addDomListener(removeBtn, "click", function(event) {
remove_marker(marker);
});
if(typeof saveBtn !== 'undefined') //continue only when save button is present
{
//add click listner to save marker button
google.maps.event.addDomListener(saveBtn, "click", function(event) {
var mReplace = contentString.find('span.info-content'); //html to be replaced after success
var mName = contentString.find('input.save-name')[0].value; //name input field value
var mDesc = contentString.find('textarea.save-desc')[0].value; //description input field value
var mType = contentString.find('select.save-type')[0].value; //type of marker
if(mName =='' || mDesc =='')
{
alert("Please enter Name and Description!");
}else{
save_marker(marker, mName, mDesc, mType, mReplace); //call save marker function
}
});
}
//add click listner to save marker button
google.maps.event.addListener(marker, 'click', function() {
infowindow.open(map,marker); // click on marker opens info window
});
if(InfoOpenDefault) //whether info window should be open by default
{
infowindow.open(map,marker);
}
}
//############### Remove Marker Function ##############
function remove_marker(Marker)
{
/* determine whether marker is draggable
new markers are draggable and saved markers are fixed */
//Remove saved marker from DB and map using jQuery Ajax
var mLatLang = Marker.getPosition().toUrlValue(); //get marker position
var myData = {del : 'true', latlang : mLatLang}; //post variables
$.ajax({
type: "POST",
url: "map_process.php",
data: myData,
success:function(data){
Marker.setMap(null);
alert(data);
},
error:function (xhr, ajaxOptions, thrownError){
alert(thrownError); //throw any errors
}
});
}
//############### Save Marker Function ##############
function save_marker(Marker, mName, mAddress, mType, replaceWin)
{
//Save new marker using jQuery Ajax
var mLatLang = Marker.getPosition().toUrlValue(); //get marker position
var myData = {name : mName, address : mAddress, latlang : mLatLang, type : mType }; //post variables
console.log(replaceWin);
$.ajax({
type: "POST",
url: "map_process.php",
data: myData,
success:function(data){
replaceWin.html(data); //replace info window with new html
Marker.setDraggable(true); //set marker to fixed
Marker.setIcon('icons/blue-icon.png'); //replace icon
},
error:function (xhr, ajaxOptions, thrownError){
alert(thrownError); //throw any errors
}
});
}
function update_marker(Marker, mName, mAddress, mType, replaceWin)
{
//Save new marker using jQuery Ajax
var mLatLang = Marker.getPosition().toUrlValue(); //get marker position
var myData = {name : mName, address : mAddress, latlang : mLatLang, type : mType }; //post variables
console.log(replaceWin);
$.ajax({
type: "POST",
url: "map_update.php",
data: myData,
success:function(data){
replaceWin.html(data); //replace info window with new html
Marker.setDraggable(true); //set marker to fixed
Marker.setIcon('icons/blue-icon.png'); //replace icon
},
error:function (xhr, ajaxOptions, thrownError){
alert(thrownError); //throw any errors
}
});
}
});
</script>