Validate form to check if any text box is empty on submit

    var checkEmpty = function ()
    {
        var formInvalid = false;
        $('#MyForm').each(function () {
            if ($(this).val() === '') {
                formInvalid = true;
            }
        });
        if (formInvalid) {
            alert('One or more fields are empty. Please fill up all fields');
            return false;
        }
        else
            return true;

    }