A new Javascript API from LinkedIn makes it easier to create in browser apps that access user data.

Every web site has to have an API - its essential to grow the brand and service. Social networking site LinkedIn has announce a new Javascript API Early Access: Javascript API. It announced an OAuth-based REST APIs at the end of last year developer.linkedin.com but the new API makes it almost trivial to add a Sign in with LinkedIn button to any web page.

Adding a sign in button is simply:

<script type="in/login"></script>

This allows the user to log in and grant permission for your app to access LinkedIn.

Once you have a user’s authorization, you can invoke any LinkedIn REST API from JavaScript. All APIs have been upgraded to support JSON.

To demonstrate the API LinkedIn built an “instant” people search demo that works entirely in the browser (the app loads in a single HTML file and calls LinkedIn directly).

Example: Instant Search

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