JSFiddle - React, Tailwind, and code Playground

HTML

<form action="" class="form-horizontal">
<div class="wrapper">
    <div class="row-fluid">
        <div class="span6">
            <div class="control-group">
                <label class="control-label"></label>
                <div class="controls">          
                    <select id="fld_default_comm_type" name="fld_default_comm_type[]" defaultValue="-1" class="m-wrap span10" field="fld_default_comm_type" appEditor="true">
                        
                    </select>
                </div>
            </div>
        </div>
        <div class="span4 checkerAlign">
            <div class="control-group">
                <div class="controls">
                   
                </div>
            </div>
        </div>
        <div class="span2 checkerAlign"><input type="checkbox" name="fld_active[]" id="fld_active" editType="booleanEdit" appEditor="true"/></div>
    </div>    
</div>
    <div><a href="#" id="addMore">Add Row</a></div>
</form>

JavaScript

$("#addMore").click(function(){   
    $(".row-fluid:last").clone().appendTo(".wrapper");  
});