从JS Array向Google Maps添加标记

Question

I have the array:

var stops = [];
    stops[1] = {name:'One', lat:51.9219465100951 ,long:-8.61797176722262};
    stops[2] = {name:'Two', lat:51.9270744 ,long:-8.6105043};
    stops[3] = {name:'Three)', lat:51.9254898 ,long:-8.6100269};

I'm trying to loop through and display these markers on a map...

function initMap() {
 map = new google.maps.Map(document.getElementById('map'), {
 center: {lat: 51.933596, lng:  -8.578540},
 zoom: 14,
 mapTypeId: 'hybrid'
});

for(var i=0; i<=stops.length; i++){
  var mypos = {stops[i].lat, stops[i].long};
  var marker = new google.maps.Marker({
   position: mypos,
   map: map,
   title: stops[i].name
  });
 }
}

No markers are being drawn on the map.

I'm getting an unexpected token error of [ on the following line. var mypos = {stops[i].lat, stops[i].lng};

I've changed this around but still can't get it to work.

Answer 1

you are creating an invalid object when all you really need to do is pass stops[i] for your position

var mypos = {stops[i].lat, stops[i].lng};

should be

var mypos =stops[i];

But there is another issue , array indexing is zero based but you start at one

A much simpler way to create the initial array would be

var stops = [
    {name:'One', lat:51.9219465100951 ,lng:-8.61797176722262},
    {name:'Two', lat:51.9270744 ,lng:-8.6105043},
    {name:'Three)', lat:51.9254898 ,lng:-8.6100269}
];

Note that the property name long has been changed to lng to match what map script uses

Answer 2

mypos needs to be:

var mypos = {lat: stops[i].lat, lng: stops[i].long};

Without "lat:" and "lng:" you're trying to declare an object as if it's an array. 'position' expects either a LatLngLiteral (see above) or a LatLng object, which is declared like this:

var mypos = new google.maps.LatLng(stops[i].lat, stops[i].long};

Answer 3

Check the code example:

 $(window).load(function() { $(document).ready(function() { var map; var elevator; var myOptions = { zoom: 1, center: new google.maps.LatLng(0, 0), mapTypeId: 'terrain' }; map = new google.maps.Map($('#map_canvas')[0], myOptions); var addresses = ['Norway', 'Africa', 'Asia', 'North America', 'South America']; for (var x = 0; x < addresses.length; x++) { $.getJSON('http://maps.googleapis.com/maps/api/geocode/json?address=' + addresses[x] + '&sensor=false', null, function(data) { var p = data.results[0].geometry.location var latlng = new google.maps.LatLng(p.lat, p.lng); new google.maps.Marker({ position: latlng, map: map }); }); } }); }); //]]> 

 <script type="text/javascript" src="//code.jquery.com/jquery-1.9.1.js"></script> <script type="text/javascript" src="http://maps.google.com/maps/api/js?sensor=false&.js"></script> <style type="text/css"> #map_canvas { width: 500px; height: 500px; } </style> <div id="map_canvas"></div>