<section>
  <article>
   <h3>title<h3>
   <div>paragraph to be wrapped</div>
   <a class="readmore">Read more</a>
  </article>
  <article>
   <h3>title<h3>
   <div>paragraph to be wrapped</div>
   <a class="readmore">Read more</a>
  </article>
</section>

$('article').each(function(){
   $(this).find('div').dotdotdot({after: '.readmore'})
});

$('.readmore').click(function(){
  //first I want to target the div right above the clicked .readmore link
  var targetedDiv = $(event.target).parent().children('div');

  // Then I try to get the div's original content through the dotdotdot function
  var targetedDivHTML = targetedDiv.triggerHandler('originalContent');

});

$('article').each(function(){
   $(this).find('div').dotdotdot({after: '.readmore'})

  $(this).click(function(){
    var content = $(this).find('div').triggerHandler('originalContent');
    $('.fulltextdiv').append(content);
    $('.fulltextdiv').show();

  });
});