Add more buttons to the WordPress TinyMCE WYSIWYG post editor

WordPress uses the TinyMCE javascript library to power the WYSIWYG post editor. The core team have done a good job of selecting the most commonly needed buttons, but on occasion it can be useful to add more. In my experience, the three most commonly requested buttons are horizontal rule <hr>, superscript <sup> and subscript <sub>.

function tcb_add_tinymce_buttons( $tinyrowthree ) {
  $tinyrowthree[] = 'hr';
  $tinyrowthree[] = 'sub';
  $tinyrowthree[] = 'sup';
  return $tinyrowthree;
add_filter( 'mce_buttons_3', 'tcb_add_tinymce_buttons' );

This adds a third row to the editor with your three new buttons. There are more to choose from, you can visit the TinyMCE buttons page to have a look.

You may want to pair this with forcing the kitchen sink always on, so your clients can always find them..

jQuery AJAX enable your WordPress forms

I’m often building forms for client projects, and they nearly always prefer them have some AJAX goodness. To this end I’ve built a small jQuery file that gets added to all my projects. It depends on Malsup’s AjaxForm and Bassistance’s Form Validation.

 * Generic *SIMPLE* Ajax Form handling
  $(this).attr('method', 'post');
  var target = $(this).attr('target');
  var func   = $(this).attr('function');
  options    = {};
  if( target || func ){
   if( target ) $('#'+target).html('').hide();
   options = {
    success:      simpleajaxform_success,
    beforeSubmit: simpleajaxform_submit


 * On submit: clear any previous update and tell the user
 *  that we're trying to update
function simpleajaxform_submit(formData, jqForm, options) {
 if( !jqForm.valid() ) return false;
 target = jqForm.attr('target');

 if( target )
  jQuery('#'+target).html('Updating, please wait...').removeClass('updated').addClass('updating').show();
 return true;

 * Response: show message in target div.
function simpleajaxform_success(responseText, statusText, xhr, jQForm){
 if( jQForm === undefined )
  jQForm = xhr;
 if( jQForm === undefined ){
  alert('Cannot handle response properly');
 target = jQForm.attr('target');
 if( target )

 hide = jQForm.attr('hide');
 if( hide )

 handler = jQForm.attr('function');
 if( handler )
  eval( handler+'(responseText, jQForm)' );

Take any form that submits to an AJAX handler (see below for notes on WordPress and ‘action’), add the ‘simpleajaxform‘ class and either a ‘target‘ or ‘function‘ property. Job done.

Here’s a stripped down example using it:

<form class="simpleajaxform" action="<?php echo admin_url('admin-ajax.php');?>" target="targetdiv">
 <input type="hidden" name="action" value="my_wp_action" />
 <input class="required" type="text" name="message" value="" />
 <input type="submit" name="submit" value="DO STUFF" />

WordPress, Javascript (jQuery) and ACTION

If you add a field named ‘action‘ in a form, then jQuery can get a bit confused by the syntax ‘jQuery(‘#someformid’).attr(‘action’,ajaxurl)‘. I’ll leave figuring that out as an exercise for the reader (or for a later post).

Download showcase plugin here: simple-ajax-form