javascript - what is the alternate source path for google markerclusterer.js library?

Question

in my project I am including this library like this:

<script src="http://google-maps-utility-library-v3.googlecode.com/svn/trunk/markerclusterer/src/markerclusterer.js"></script>

however the src path seems to be broken since yesterday hence it is not rendering the JS thus I am unable to show clusters on the map.

I do have the local copy for this JS, I can set src path to refer to my local copy instead of above ../svnt/runk/.. path.

What I am searching is there any alternative path for this library? May be it is hosted on CDN.

So far, I think, above is only the place where it is hosted:

Ref: https://code.google.com/p/google-maps-utility-library-v3/source/checkout

Answer 1

As Google moved the source over to GitHub a while back, the new GitHub version can be accessed from RawGit by using the following script url:

https://cdn.rawgit.com/googlemaps/js-marker-clusterer/gh-pages/src/markerclusterer.js

You'll also need to specify the imagePath option when instantiating your MarkerClusterer to access the images from GitHub:

var mc = new MarkerClusterer(map, markers, { 
    imagePath: 'https://cdn.rawgit.com/googlemaps/js-marker-clusterer/gh-pages/images/m' 
});

The following earlier SO post contains more detail regarding the imagePath reference to the cluster images:

Google maps not working in https://

Whilst the above urls (with the cdn prefixes) have no traffic limits or throttling and the files are served via a super fast global CDN, please bear in mind that RawGit is a free hosting service and offers no uptime or support guarantees.

This is covered in more detail in the following SO answer:

Link and execute external JavaScript file hosted on GitHub

This post also covers that, if you're linking to files on GitHub, in production you should consider targeting a specific release tag to ensure you're getting a specific release version of the script.

However, as the custodians of the js-marker-clusterer repository have yet to create any releases, this isn't currently possible.

As a result, you should seriously consider downloading and including the library and its resources directly in your project for production purposes.