I have the following code for upload form validation. I'm using jQuery validation plugin.
The required: true works fine, but extension: "csv" is not, and continue with submit.
Here's my code:
<form method="POST" action="uploadCoordenadas" enctype="multipart/form-data" id="frm-upload" name="frm-upload">
  upload file:
  <input type="file" name="file" id="file">
  <br />
  <input type="submit" value="Procesar">
</form>
Javascript:
$(function() {
  $("#frm-upload").validate({
    rules: {
      file: {
        required: true,
        extension: "csv"
      }
    },
    messages: {
      file: {
        required: "Debe seleccionar un archivo para realizar la carga.",
        extension: "Debe seleccionar un archivo con extension valida (*.csv)"
      }
    },
    submitHandler: function(form) {
      form.submit();
    }
  });
});
 
     
    