javascript - 谷歌地图 V3 用户添加标记

Question

我需要一些允许用户将他们自己的标记添加到我的 map 的代码。有人有例子吗？

谢谢!

var initialLocation;
var siberia = new google.maps.LatLng(60, 105);
var newyork = new google.maps.LatLng(40.69847032728747, -73.9514422416687);
var browserSupportFlag =  new Boolean();

var stockholm = new google.maps.LatLng(59.32522, 18.07002);
var parliament = new google.maps.LatLng(59.327383, 18.06747);
var marker;
var map;


function initialize() {
  var myOptions = {
    zoom: 6,
    mapTypeId: google.maps.MapTypeId.ROADMAP
  };
  var map = new google.maps.Map(document.getElementById("map_canvas"), myOptions);



  // Try W3C Geolocation (Preferred)
  if(navigator.geolocation) {
    browserSupportFlag = true;
    navigator.geolocation.getCurrentPosition(function(position) {
      initialLocation = new google.maps.LatLng(position.coords.latitude,position.coords.longitude);
      map.setCenter(initialLocation);
    }, function() {
      handleNoGeolocation(browserSupportFlag);
    });
  // Try Google Gears Geolocation
  } else if (google.gears) {
    browserSupportFlag = true;
    var geo = google.gears.factory.create('beta.geolocation');
    geo.getCurrentPosition(function(position) {
      initialLocation = new google.maps.LatLng(position.latitude,position.longitude);
      map.setCenter(initialLocation);
    }, function() {
      handleNoGeoLocation(browserSupportFlag);
    });
  // Browser doesn't support Geolocation
  } else {
    browserSupportFlag = false;
    handleNoGeolocation(browserSupportFlag);
  }

  function handleNoGeolocation(errorFlag) {
    if (errorFlag == true) {
      alert("Geolocation service failed.");
      initialLocation = newyork;
    } else {
      alert("Your browser doesn't support geolocation. We've placed you in Siberia.");
      initialLocation = siberia;
    }
  }
}

google.maps.event.addListener(map, 'click', function(event) {
  placeMarker(event.latLng);
});

function placeMarker(location) {
  var marker = new google.maps.Marker({
      position: location, 
      map: map
  });


  map.setCenter(location);


  $.ajax({
     url: 'myPHP',
     data: location,
     succes: function(){
       alert('marker was added');
     },
     error: function(){
       alert('marker wasn't added');
       marker.setMap(null);
     }
  });
}

</script>

Answer 1

这不是一项艰巨的工作:

• 在 map 上设置点击事件

  google.maps.event.addListener(map, 'click', function(event) {  placeMarker(event.latLng);});

• 放置标记并对服务器进行 AJAX 调用以将位置保存在数据库中:

  function placeMarker(location) {  var marker = new google.maps.Marker({      position: location,       map: map  });  map.setCenter(location);  $.ajax({     url: 'myPHP',     data: location,     succes: function(){       alert('marker was added');     },     error: function(){       alert('marker wasn't added');       marker.setMap(null);     }  });}