Auto-tag TV type in NewsPublisher

<div id="np-[[+npx.fieldName]]-container" class="np-text">
  [[+np.error_[[+npx.fieldName]]]]
  <label class="fieldlabel" for="np-[[+npx.fieldName]]" [[+npx.readonly]] title="[[+npx.help]]">[[+npx.caption]]: </label>
  <input name="[[+npx.fieldName]]" class="text" id="np-[[+npx.fieldName]]" type="text"  value="[[+np.[[+npx.fieldName]]]]"  maxlength="[[+npx.maxlength]]" />
</div>
 
<script>
 $(function() {
    var [[+npx.fieldName]]Tags = [ [[!tagLister? &tv=`[[+npx.fieldName]]` &tpl=`npTagTplJSON` &parents=`213` &sortBy=`tag` &limit=`0` &outputSeparator=`,`]] ];
    function split( val ) {
      return val.split( /,\s*/ );
    }
    function extractLast( term ) {
      return split( term ).pop();
    }
 
    $( "#np-[[+npx.fieldName]]" )
      // don't navigate away from the field on tab when selecting an item
      .bind( "keydown", function( event ) {
        if ( event.keyCode === $.ui.keyCode.TAB &&
            $( this ).data( "ui-autocomplete" ).menu.active ) {
          event.preventDefault();
        }
      })
      .autocomplete({
        minLength: 0,
        source: function( request, response ) {
          // delegate back to autocomplete, but extract the last term
          response( $.ui.autocomplete.filter(
            [[+npx.fieldName]]Tags, extractLast( request.term ) ) );
        },
        focus: function() {
          // prevent value inserted on focus
          return false;
        },
        select: function( event, ui ) {
          var terms = split( this.value );
          // remove the current input
          terms.pop();
          // add the selected item
          terms.push( ui.item.value );
          // add placeholder to get the comma-and-space at the end
          terms.push( "" );
          this.value = terms.join( ", " );
          return false;
        }
    });
});

</script>

Banana, apple, mango, 

if (empty($tag)) {
   continue;
else {
   tag = trim(', ') tag.
}

$fields['tv' . $tv->get('id')] = $_POST[$name];

if ($name == 'TagTV') { // or whatever the TV's name is
   $tags = explode(',', $_POST[$name]);
   foreach ($tags as $tag) {
      $tag = trim($tag);
      if ($empty(tag)) {
         $finalTags[] = $tag;
      }
      $_POST[$name] = implode(',', $finalTags);
   }
}

$('form').submit(function(e) {
            $('.ui-autocomplete-input').each(function() {
                var pH = $.trim($(this).val());
                var pHn = pH.replace(/,\s*$/, '');
                $(this).val(pHn);
            });
        });