* <li>params : <b>String/Object/Function</b><p class="sub-desc">The
* parameters to pass to the server (defaults to none). These may be specified as a url-encoded
* string, or as an object containing properties which represent parameters,
* or as a function, which returns such an object.</p></li>
* <li>params : <b>String/Object/Function</b><p class="sub-desc">The
* parameters to pass to the server (defaults to none). These may be specified as a url-encoded
* string, or as an object containing properties which represent parameters,
* or as a function, which returns such an object.</p></li>