danielbitzer

This is a very simple WordPress plugin for creating frontend notices server side or client side. There are 4 notice types by default success, error, warning, general or you can create custom notice types. Server side notices are stored in the session until displayed.
This plugin hopes to one day solve the problem of complex WordPress sites with multiple plugins all having their own Notices that all require styling.
But for now, the Notices API is useful tool for developers creating custom functionality in their theme.
Server Side Usage
<pre><code><?php
 WP_Notices::success( $title, $message, $timer, $priority ); 
 WP_Notices::warning( 'Login Failed', 'You have entered an incorrect Username or password, please try again.'); 
 WP_Notices::error( $title, $message, $timer, $priority ); 
 WP_Notices::general( $title, $message, $timer, $priority ); 
 WP_Notices::custom( $type, $title, $message, $timer, $priority );
?>
</code></pre>
Client Side Usage
<pre><code>jQuery(document).ready(function($){

 $.WP_Notices.success( title,message, scroll_to, timer, callback );
 $.WP_Notices.error( title, message, scroll_to, timer, callback );
 $.WP_Notices.general( title, message, scroll_to, timer, callback );
 $.WP_Notices.warning( title, message, scroll_to, timer, callback );

 // Custom type
 $.WP_Notices.render_notice( type, title, message, scroll_to, timer, callback );

 // Using the callback parameter
 $.WP_Notices.warning( 'Form Error', 'Invalid form input.', false, 3000, function( $notice ) {
 console.log( $notice );
 });

});
</code></pre>
Options
<pre><code>add_filter( 'notice_api_options', 'customize_notice_options' );

function customize_notice_options( $options )
{
 $options = array(
 'prepend_selector' => '#content',
 'container_class' => 'notices-container',
 'before_title' => '',
 'after_title' => ': ',
 'scrolling_speed' => 500,
 );
 return $options;
}
</code></pre>

Notices API

The simple Notices API currently missing in WordPress.

Nikki Blight

The Scheduled Announcements Widget lets you add a scrolling list of site announcements, independent of normal posts and pages, to any widgetized 
area of your site, or to your theme files. Perfect for publicizing an event, alert, or notice that doesn’t require a full-page write-up. Announcements 
can be scheduled to run indefinitely or during a specific date range, and admins can chose between horizontal or vertical scrolling.
<h3>Additional Details</h3>
This plugin makes use of the JSColor library. The JSColor project is maintained by Jan Odv�rko and released under the GNU Lesser General Public 
License. See http://jscolor.com for more information.

Scheduled Announcements Widget

The Scheduled Announcements Widget lets you add a scrolling list of site announcements to any widgetized area of your site.

Notices API vs Scheduled Announcements Widget