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Thread: Google Maps API 3 and general Syntax

  1. #1
    Join Date
    Apr 2011
    Location
    Seattle, WA
    Posts
    265

    Question Google Maps API 3 and general Syntax

    Ok, so I have experience in server-side scripting, and my boss wants me to do something that requires client-side scripting...

    I'm trying to make a map for our website using the Google Maps API 3 code but my Javascript experience is very limited... I got a textbook and I'm getting the basics more or less down, but I can't error-check myself. I'm not sure what I'm doing wrong. I get the map, but no markers...

    Here is an example of my code:

    Code:
    plats76 = (
    	new google.maps.Size(132,94), // Size (h, w) of the image
    	new google.maps.Point(66,47) // Where the dot location is for the image
    	icon: 'img/LocustGroveLogo_home.png', // What the new image is
    	null,
    );
    
    unplats76 = (
    	new google.maps.Size(20,25), // Size (h, w) of the image
    	new google.maps.Point(9,23) // Where the dot location is for the image
    	icon:'img/nhtMarker.png',
    	shadow:'img/nhtMarkerShadow.png',
    );
    
    var my76Marker = new google.maps.Marker({
    	position: new google.maps.LatLng(47.909605,-122.219309), // Google Maps Location for the NHT Office (example)
    	new google.maps.Size(20,25), // Size (h, w) of the image
    	new google.maps.Point(9,23) // Where the dot location is for the image
    	icon:'img/nhtMarker.png',
    	shadow:'img/nhtMarkerShadow.png',
    	map: map
    });
    
    google.maps.event.addListener(my76Marker, 'mouseout', function(){
    	this.setIcon(unplats76);
    });
    google.maps.event.addListener(my76Marker, 'mouseover', function(){
    	this.setIcon(plats76);
    });
    and...

    Code:
    	window.onload = function() {
    		var mapDiv = document.getElementById('map');
    		var latlng = new google.maps.LatLng(47.909605,-122.219309);
    		var options = {
    			center: latlng,
    			zoom: 19,
    			mapTypeId: google.maps.MapTypeId.SATELLITE
    		};
    		var map = new google.maps.Map(mapDiv, options);
    	}
    I'm using PHP to generate the coordinates and numbers, like the 76 in this example, but this is what the client-side shows up as once the PHP is all done and lovely.

    Anyway... I need to get the markers to show up and then get the markers to change on mouseover. If someone could take a look at what I've got and help me figure out how to fix it, it'd be greatly appreciated.

    Thanks!

  2. #2
    Join Date
    Nov 2010
    Posts
    1,090
    easier to debug a live map, but for starters I can see that you have problems with your commas in this code:
    Code:
    plats76 = (
    	new google.maps.Size(132,94), // Size (h, w) of the image
    	new google.maps.Point(66,47) // Where the dot location is for the image
    	icon: 'img/LocustGroveLogo_home.png', // What the new image is
    	null,
    );
    
    unplats76 = (
    	new google.maps.Size(20,25), // Size (h, w) of the image
    	new google.maps.Point(9,23) // Where the dot location is for the image
    	icon:'img/nhtMarker.png',
    	shadow:'img/nhtMarkerShadow.png',
    );
    the way I understand it, each attribute of an object needs a comma after it, to tell the code that there is more to come. Following from that, the LAST attribute should have no comma - if it does some browsers (particularly IE) expect more to come and freak out when there is nothing.

    I also suspect that you should be wrapping your objects in curly brackets, so the code I would be going for instread of the above would be something like:

    Code:
    plats76 = ({
    	new google.maps.Size(132,94), // Size (h, w) of the image
    	new google.maps.Point(66,47), // Where the dot location is for the image
    	icon: 'img/LocustGroveLogo_home.png', // What the new image is
    	null
    });
    
    unplats76 = ({
    	new google.maps.Size(20,25), // Size (h, w) of the image
    	new google.maps.Point(9,23), // Where the dot location is for the image
    	icon:'img/nhtMarker.png',
    	shadow:'img/nhtMarkerShadow.png'
    });
    that might be a start, anyway - what does firebug say?

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