Duplicate and insert any field using jquery

<script>

$(document).ready(function(){

$('#add_more').click(function(){
$(".lasts:last").clone().insertAfter("#lasts:last");
});

});

</script>

<fieldset class="name lasts" id="lasts">
<div class="body-title">Attribute Value</div>
<input class="flex-grow" type="text" placeholder="value" name="value[]" tabindex="0" value="" aria-required="true" required=""><hr/> 
</fieldset>


<fieldset>
<div class="body-title"></div>
<button class="tf-button" type="button" id="add_more" style="position:relative; float:right">Add More +</button>
</fieldset>