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I am implementing a jquery form, and I want that when Valida runs and class error is added to the label leaving the red font, I will send a picture representing how I want.
<html>
    <head>
        <title>Como Validar um Formulário dinamicamente com jQuery</title>        
        <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.min.js" ></script>           
        <script type="text/javascript">
            $(function () {
                
                $("#my-form").validate({
                    focusCleanup: true,
                    errorLabelContainer: "input .labell",
                    errorElement: "div",
                    rules: {
                        nome: {
                            minlength: 3,
                            maxlength: 50
                        },
                        empresa: {
                            minlength: 4
                        }
                    },
                    messages: {
                        nome: {
                            required: "",
                            minlength: "Insira seu nome completo!"
                        },
                        cpf: {
                            required: ""
                        },
                        empresa: {
                            required: "",
                            minlength: "Preencha no mínimo 4 caracteres!"
                        }
                    }
                });
            });
        </script>
    </head>
    <body class="container">
        <form class="text-uppercase" role="form" id="my-form" method="post" action="add_pess.php"><br><br>
            <div class="row">
                <div class="col-md-12">
                    <label class="labell" id="lb_nome" for="nome">Nome Completo:</label>                                  
                    <input type="text" class="form-control required" id="nome" name="nome" placeholder="Digite seu nome completo">
                </div>
            </div><br>
            <div class="row">
                <div class="col-md-12">
                    <label id="lb_cpf" class="labell" for="cpf">CPF:</label>
                    <input type="tel" class="form-control required" id="cpf" name="cpf" placeholder="Digite o CPF">
                </div>
            </div><br>  
            <div class="row">
                <div class="col-md-12">
                    <label id="lb_empresa" class="labell" for="empresa">Empresa:</label>                 
                    <input type="text" class="form-control required" id="empresa" name="empresa" placeholder="Digite o nome da empresa">
                </div>
            </div><br>
            <div class="row">                          
                <div class="col-md-12">
                    <label>Relacionamento:</label>            
                    <select name="tipo" id="tipo" class="form-control">
                        <option value="CLIENTE">CLIENTE</option>
                        <option value="FORNECEDOR">FORNECEDOR</option>
                        <option value="PARCEIRO">PARCEIRO</option>
                        <option value="OUTRO">OUTRO</option>
                    </select>
                </div>                 
            </div><br>
            <div class="row">
                <div class="col-md-12">
                    <label for="ob">Observações:</label>                 
                    <textarea rows="5" class="form-control" id="ob" name="ob" placeholder="Se caso haver alguma observação digite aqui"></textarea>
                </div>
            </div><br>
            <div class="text-right col-md-12">
                <button id="submit" type="submit" class="btn btn-primary">Enviar</button>
            </div><br>
        </form> 
        <script type="text/javascript" src="http://ajax.aspnetcdn.com/ajax/jquery.validate/1.15.0/jquery.validate.js"></script>
        <script type="text/javascript" src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js" ></script>
    </body>
</html>

Your code is giving error when executing. Could fix it?
– Hugo Leonardo
{ "message": "Uncaught Syntaxerror: Unexpected token <", "filename": "http://stacksnippets.net/js", "lineno": 38, "colno": 9 }
– Hugo Leonardo
Yes I’ll fix it.
– Sr. Bigode