In order to publish a SharePoint hosted apps
create a developer site in which developer feature enabled on it.
to publish a app on normal site enable developer on it. it's a hidden feature to be enabled from powershell.
<td><input name="ADD" id="btnADD" type="submit" value="Add Item to List" /></td></tr>
</table> In order to work with Jquery and Sharepoint add below references for Jquery or download the files online and refer from your style library. I will be referring online jquery. <script src="http://ajax.aspnetcdn.com/ajax/jquery/jquery-1.10.2.js "></script>