问JQuery验证插件:无法验证引导向导的第二个设置

EN

$(document).ready(function(){
    /*  Activate the tooltips      */
    $('[rel="tooltip"]').tooltip();
      
    $('.wizard-card').bootstrapWizard({
        'tabClass': 'nav nav-pills',
        'nextSelector': '.btn-next',
        'previousSelector': '.btn-previous',
         
         onInit : function(tab, navigation, index){
            
           //check number of tabs and fill the entire row
           var $total = navigation.find('li').length;
           $width = 100/$total;
           
           $display_width = $(document).width();
           
           if($display_width < 600 && $total > 3){
               $width = 50;
           }
           
           navigation.find('li').css('width',$width + '%');
           
        },
        onNext: function(tab, navigation, index){
            if(index == 1){
                return validateFirstStep();
            } else if(index == 2){
                return validateSecondStep();
            } else if(index == 3){
                return validateThirdStep();
            } //etc. 
              
        },
        onTabClick : function(tab, navigation, index){
            // Disable the posibility to click on tabs
            return false;
        }, 
        onTabShow: function(tab, navigation, index) {
            var $total = navigation.find('li').length;
            var $current = index+1;
            
            var wizard = navigation.closest('.wizard-card');
            
            // If it's the last tab then hide the last button and show the finish instead
            if($current >= $total) {
                $(wizard).find('.btn-next').hide();
                $(wizard).find('.btn-finish').show();
            } else {
                $(wizard).find('.btn-next').show();
                $(wizard).find('.btn-finish').hide();
            }
        }
    });

    // Prepare the preview for profile picture
    $("#wizard-picture").change(function(){
        readURL(this);
    });
    
    $('[data-toggle="wizard-radio"]').click(function(){
        wizard = $(this).closest('.wizard-card');
        wizard.find('[data-toggle="wizard-radio"]').removeClass('active');
        $(this).addClass('active');
        $(wizard).find('[type="radio"]').removeAttr('checked');
        $(this).find('[type="radio"]').attr('checked','true');
    });
    
    $('[data-toggle="wizard-checkbox"]').click(function(){
        if( $(this).hasClass('active')){
            $(this).removeClass('active');
            $(this).find('[type="checkbox"]').removeAttr('checked');
        } else {
            $(this).addClass('active');
            $(this).find('[type="checkbox"]').attr('checked','true');
        }
    });
    
    $height = $(document).height();
    $('.set-full-height').css('height',$height);
    
    
});

function validateFirstStep(){
    
    $(".wizard-card form").validate({
		rules: {
			firstname: "required",
			lastname: "required",
			email: {
				required: true,
				email: true
			}

		},
		messages: {
			firstname: "Please enter your First Name",
			lastname: "Please enter your Last Name",
			email: "Please enter a valid email address",
            
		}
	}); 
	
	if(!$(".wizard-card form").valid()){
    	//form is invalid
    	return false;
	}
	
	return true;
}

function validateSecondStep(){
   
    //code here for second step
    $(".wizard-card form").validate({
		rules: {
            matri: "required"
		},
		messages: {
            matri: "Matricule required"
		}
	}); 
	
	if(!$(".wizard-card form").valid()){
    	console.log('invalid');
    	return false;
	}
	return true;
    
}