example.js

// Get a reference to the client.
var wsc = $().wsc();

// Add a new extension.
wsc.add_extension( function( client ) {

    // Create command /foo and provide a handler.
    client.bind('cmd.foo', cmd_foo);
    
    var cmd_foo = function( cmd ) {
        
        // Just say "Bar!"
        client.say( cmd.target, 'Bar!');
    
    };

} );