##JavaScript last.fm API Readme

###Overview

The JavaScript last.fm API allows you to call last.fm API methods and get the corresponding JSON responses. Basically it just acts as a wrapper that gives easy access to API methods. Responses can be cached using the localStorage API.

###Encoding

You don't need to worry about encoding when calling API methods. Everything should automatically be UTF-8 encoded and decoded by your browser if you set the Content-Type for your document to UTF-8:

<meta http-equiv="Content-Type" content="text/html;charset=utf-8" />

###Authentication

It's easy to fetch a session for a user account. This allows you to perform actions on that account in a manner that is secure for last.fm users. All write services require authentication.

###Write methods

Due to technical restrictions it's not possible to get a response when calling write methods. Reading responses is only possible using HTTP Access-Control, which is currently not supported by the last.fm API.

###Submissions

Scrobbling is not yet supported.

###Usage

You need to add the following scripts to your code in order to work with the JavaScript last.fm API:

<script type="text/javascript" src="lastfm.api.md5.js"></script>

<script type="text/javascript" src="lastfm.api.js"></script>

If you want to use caching, you need to add another script:

<script type="text/javascript" src="lastfm.api.cache.js"></script>

Built in JSON support should be available in modern browsers, if you want to be sure it's supported, include the following:

<script type="text/javascript" src="json2.js"></script>

You can get that file at http://www.json.org/json2.js , and make sure you've removed the first line before using it.

Now you can use the JavaScript last.fm API like this:

/* Create a cache object */
var cache = new LastFMCache();

/* Create a LastFM object */
var lastfm = new LastFM({
  apiKey    : 'f21088bf9097b49ad4e7f487abab981e',
  apiSecret : '7ccaec2093e33cded282ec7bc81c6fca',
  cache     : cache
});

/* Load some artist info. */
lastfm.artist.getInfo({artist: 'The xx'}, {success: function(data){
  /* Use data. */
}, error: function(code, message){
  /* Show error message. */
}});

###More

For further information, please visit the official API documentation: http://www.last.fm/api