function getItemBlock() { 

  var strItemBlock=['<div class="itemblock newitem" >',

                  '<h5>Item <span class="itemnum"><\/span>',                                       

                  '<button class=\"btnDeleteItem btn\">Delete Item<\/button>', 

                  '<\/h5>',

                  '<div class=\"row\">',

                  '<div class=\"col\">',

                  '<\/div>']

   return strItemBlock.join('\n');

}

​

$('#wrapper').append(getItemBlock());