Would not it make sense to write safer JavaScript code without using public fields "foo.bar" and ugly setter/getter "foo.getBar(); foo.setBar(value);"?
.NET style properties can be done in JavaScript with naming conventions and an if statement.

C#
---------------------------
class ConnectionInfo
{
	private uint port;
	
	public uint Port
	{
		get
		{
			return port;
		}
		set
		{
			port = value;
		}
	}
	
	public override string ToString()
	{
		return string.Format("Port: {0}", port);
	}
}

ConnectionInfo connectionInfo = new ConnectionInfo();
uint port = connectionInfo.Port  // Get the port.
connectionInfo.port = 80; // Set the port.
Console.WriteLine(connectionInfo.ToString());

JavaScript
--------------------------------------------
function ConnectionInfo()
{
	var port = 0; // private field
	
	// Name a property with a noun.
	this.port = function()
	{
		if (arguments.length == 0)
		{
			return port;
		}
		else
		{
			if (arguments[0] >= 0 && arguments[0] <= 65535)
			{
				port = arguments[0];
			}
			else
			{
				throw "ArgumentOutOfRangeException: value must be between 0 and 65535";
			}
		}
	}
	
	// Name a function with a verb.
	this.toString = function()
	{
		return "Port: " + port;
	}
}

// Usage
var connectionInfo = new ConnectionInfo();
var port = connectionInfo.port(); // Get the port.	
connectionInfo.port(80); // Set the port;
connectionInfo.toString(); // Call a method.