JSFiddle - React, Tailwind, and code Playground

by cacjx

HTML

<script src="//ajax.aspnetcdn.com/ajax/jquery.validate/1.13.1/jquery.validate.min.js"></script>
<form method="POST" id="form-clave">
  <div class="form-group">
    <input type="text" name="clave1" id="clave1" required>
  </div>
  <div class="form-group">
    <input type="text" name="clave2" id="clave2" required>
  </div>
  <div class="form-group">
    <input type="text" name="clave3" id="clave3" required>
  </div>
  <button id="aceptar">aceptar</button>
</form>

CSS

body {
  font-family: Helvetica, Arial, sans-serif;
}

.form-group {
  margin-bottom: 40px;
  position: relative;
}

.form-group>div.error {
  background: #c62828;
  border-radius: 4px;
  color: white;
  padding: 10px;
  position: absolute;
  top: 20px;
}

.form-group>div.error:after {
  right: 100%;
  top: 18px;
  border: solid transparent;
  content: " ";
  height: 0;
  width: 0;
  position: absolute;
  pointer-events: none;
  border-color: rgba(198, 40, 40, 0);
  border-right-color: #c62828;
  border-width: 10px;
  margin-top: -10px;
}

JavaScript

$('#form-clave').validate({
  rules: {
    clave3: {
      required: true,
      equalTo: '#clave2'
    }
  },
  messages: {
    clave3: {
      required: "Complete este campo",
      equalTo: "Debe coincidir con la nueva clave"
    }
  },
  errorElement: 'div',
  errorPlacement: function(error, input) {
    $(error).css({
      'left': input.outerWidth(true) + 20,
      'top': 0
    });

    input.parent().append(error);
  }
});

$('#aceptar').on('click', function(e) {

  e.preventDefault();

  if ($('#form-clave').valid() == true)
    alert('el formulario es válido!');

});