Jquery / bootstrap / Form Validation

formValidation.js

$(document).ready(function(){ 
    
    var hashVal = window.location.hash.substr(1);   
	if(hashVal=='thanks') {
		$("#myModalur").modal();
	}
	else if(hashVal=='error'){
		$("#databaseError").modal();
	} else {
		$('#myModal').modal('show');  			
	}
    
    
	$("#registration_form").submit(function(e){
		 var address = $('#registration_address').val();
		 var fullName = $("#registration_name").val();
		 var sEmail = $('#registration_email').val();
		 var age = $('#registration_age').val();
		 var mobile = $('#registration_mob').val();

		 var occupation = $('#registration_occupation').val();
		 var comment = $("#comment").val();
		 var checker1 = $("#checkerOne").is(':checked') ? 1 : 0;
		 var checker2 = $("#checkerTwo").is(':checked') ? 1 : 0;
		 var checker3 = $("#checkerThree").is(':checked') ? 1 : 0;
		 var checker4 = $("#checkerFour").is(':checked') ? 1 : 0;
		 var checker5 = $("#checkerFive").is(':checked') ? 1 : 0;

		 var checker6 = $("#checkerSix").is(':checked') ? 1 : 0;
		 var checker7 = $("#checkerSeven").is(':checked') ? 1 : 0;
		 var checker8 = $("#checkerEight").is(':checked') ? 1 : 0;
		 var checker9 = $("#checkerNine").is(':checked') ? 1 : 0;
		 var checker10 = $("#checkerTen").is(':checked') ? 1 : 0;

		 var opt1 = $('#opt1').val();

    if(checker1 == 0 && checker2 == 0 ) {
            
            $("#nameErrorModal").modal();
            $("#myModal").fadeOut(100);   
            $(".modal-backdrop.in").fadeOut(100);  
            
            e.preventDefault();
            return false;
        
			} 
    else if (checker4 == 0 && checker5 == 0) {
         $("#nameErrorModal").modal();
            $("#myModal").fadeOut(100); 
            $(".modal-backdrop.in").fadeOut(100);  
        e.preventDefault();
            return false;
    }

    else if (checker6 == 0 && checker7 == 0 && checker8 == 0 & checker9 == 0 && checker10 == 0 ) {
         $("#nameErrorModal").modal();
         $("#myModal").fadeOut(100); 
          $(".modal-backdrop.in").fadeOut(100);  
          
        e.preventDefault();
            return false;
    }

    else if(opt1 == '') 
        {
                $("#nameErrorModal").modal();
                 $("#myModal").fadeOut(100); 
                $(".modal-backdrop.in").fadeOut(100);  
                 
                e.preventDefault();
                return false;
            }
     else if(fullName == "" || age == "" || occupation == "" || mobile == ""){
         $("#nameErrorModal").modal();
          $("#myModal").fadeOut(100); 
         $(".modal-backdrop.in").fadeOut(100);  
         e.preventDefault;
         return false;
     }
      
     else if ($.trim(sEmail).length == 0) {

            $("#nameErrorModal").modal();
             $("#myModal").fadeOut(100); 
            $(".modal-backdrop.in").fadeOut(100);  
            return false;
            e.preventDefault();

        }
     else if (validateEmail(sEmail)){
         return true;
     }
     else{
        
         return true;
     }
     
 function validateEmail(sEmail) {

    var filter = /^([\w-\.]+)@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.)|(([\w-]+\.)+))([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)$/;

    if (filter.test(sEmail)) {

        return true;

    }

    
	});

	$(".loader-overlay1_").css({"display":"block", "position":"fixed", "top":"0", "botttom":"0", "left":"0", "right":"0"});
	$(".loader-overlay1_ span").css({"display":"block", "position":"fixed"});
	$(".loader-overlay2_").css({"display":"block", "position":"fixed", "top":"0", "botttom":"0", "left":"0", "right":"0"});
	$(".loader-overlay2_ span").css({"display":"block", "position":"fixed"});



	$('#checkerTwo').click(function(){
		if (this.checked) {
			$('#checkeNo').css('display', 'block');
			$('#thisThinga').css('margin-top', '95px');
        
		}
	});

	$('#checkerOne').click(function(){
		if (this.checked) {
			$('#checkeNo').css('display', 'none');
		}
	}) 

	$('.specialize').click(function(){
		$('.containThisCheckBox .checkbox').fadeIn(100);
	});
	
    if ( $(window).width() < 769  ) {    

        $('.specialize').click(function(){
            $('#enrollThiss').css('margin-top','584px');
        });

     }
    else if ( $(window).width() < 765  ){
        $('.specialize').click(function(){
            $('#enrollThiss').css('margin-top','510px');
        });
    }

    else if ( $(window).width() < 605  ){
         $('.specialize').click(function(){
            $('#enrollThiss').css('margin-top','540px');
        });

    }

    else if ( $(window).width() < 365  ){
         $('.specialize').click(function(){
            $('#enrollThiss').css('margin-top','563px');
        });

    }
    else{
   
        return true;
    }
        
    
        
});