Checking form input values with jquery

Question

I have a form that I want jquery to check and see if the input/select values with a class of required (These classes are in the #customerForm form) are blank. If they are I would like to prevent the form from submitting and change the color of the input/select box to red. If all of the input/select values with a class of required do have values, I would like to submit the form, fade the form inputs out and and fadeIn the next form. Here's my code:

$('#customerForm').submit(function (event) {
    var value = $('.required').each();
    if (value === "") {
        value.addClass("invalid");
        return false;
    } else {
        value.removeClass("invalid");
        $('#billForm, #shipForm').fadeOut();
        $('#payment-form').fadeIn();
    }
}); 

The problem is the form doesn't check for the input values and submits the form anyways. Any help would be amazing.

Answer 1

$('.required').each() returns an array of inputs.

You have to loop through each input and check the value before the form can be submit.

$( ".required" ).each(function() {
  //validation
});

more complete example:

$('#customerForm').submit(function (event) {
  var error = false;
  $( ".required" ).each(function() {
    if ($(this).val() === "") 
    {
      $(this).addClass("invalid");
      error = true;
    } 
    else 
    {
      $(this).removeClass("invalid");
    }
  });
  if(!error)
  {
    $('#billForm, #shipForm').fadeOut();
    $('#payment-form').fadeIn();
  }
  else
  {
    return false;
  }
});