js para adicionar campos ao formulário

campos.js

  <script type="text/javascript">  
		$(document).ready(function(){  
 
    	var input = '<label style="display: block"><br><div class="row">';  
    	input +='<div class="col-xs-6 col-md-4"><input class="form-control" id="disabledInput" type="text" placeholder="Materia" required ></div>';
    	input +='<div class="col-xs-6 col-md-4"><input class="form-control" id="disabledInput" type="text" placeholder="Aluno" required ></div>';
    	input +='<div class="col-xs-6 col-md-4"><input class="form-control" id="disabledInput" type="text" placeholder="Professor" required ></div>';
    	input +='</div><a href="#" class="remove"> <span class="glyphicon glyphicon-remove-sign" aria-hidden="true"></span></a></label>';
    	$("input[name='addFormacao']").click(function( e ){  
        	$('#formacao_adicional').append( input );  
    		});  
    		function adicional(){  
 
    	var input = '<label style="display: block"><br><div class="row">';  
    	input +='<div class="col-xs-6 col-md-4"><input class="form-control" id="disabledInput" type="text" placeholder="Materia" required ></div>';
    	input +='<div class="col-xs-6 col-md-4"><input class="form-control" id="disabledInput" type="text" placeholder="Aluno" required ></div>';
    	input +='<div class="col-xs-6 col-md-4"><input class="form-control" id="disabledInput" type="text" placeholder="Professor" required ></div>';
    	input +='</div><a href="#" class="remove"> <span class="glyphicon glyphicon-remove-sign" aria-hidden="true"></span></a></label>';
    	$("input[name='addFormacao']").click(function( e ){  
        	$('#formacao_adicional').append( input );  
    		});
     	$('#formacao_adicional').delegate('a','click',function( e ){  
        	e.preventDefault();  
        	$( this ).parent('label').remove();  
    		});  
 
		});  
   </script>