вот такая форма:
<form method="post" id="addNewAdvert" action="/addadvert" enctype="multipart/form-data">
<label for="title"><?=$text_newadvert_title_advert?></label>
<input type="text" class="form-control bdr" id="title" name="title" />
<label for="keywords"><?=$text_newadvert_keywords?></label>
<input type="text" class="form-control bdr" id="keywords" name="keywords" />
<label for="category"><?=$text_newadvert_type?></label>
<div id="categoryWrap">
<input type="hidden" name="category_id" id="categoryIdInput" />
<select name="category" id="mainCategory" data-id="0">
<option value="0">- <?=$text_select?> -</option>
<?php foreach($categoryList as $cl): ?>
<option value="<?=$cl['id']?>"><?=$cl['title']?></option>
<?php endforeach ?>
</select>
</div>
<div id="typeCategoryBlock"></div>
<div class="clearfix"></div>
<label for="description"><?=$text_newadvert_description?></label>
<input type="text" class="form-control bdr" id="description" name="description" />
<div class="clearfix"></div>
<label for="comments"><?=$text_comments?></label>
<input type="radio" id="comments" name="comments" value="yes" /> Yes
<input type="radio" id="comments" name="comments" value="no" /> No
<div class="clearfix"></div>
<label for="textAdvert"></label>
<textarea class="textAdvert" name="fullTextAdvert" id="editor" placeholder=""></textarea>
<div id="formElementsBlock"></div>
<label for="images"><?=$text_images_advert?></label>
<input type="file" name="images_advert[]" id="input_file" class="input input_file" multiple="true" />
<button type="submit" id="addPost" name="addPost"><?=$text_save?></button>
</form>
в блоке
<div id="formElementsBlock"></div>
появляются динамические элементы (input, select) как можно отправить их через ajax отдельно от основных полей формы??