为什么我的laravel网站在加载器的超时时间完成后重新加载

I am working on laravel project along with jquery for reference you can visit on "http://etailor.fudugosolutions.in/designshirts" site. While I click on options of fabric tab, what actually happening is after completion of time of loader is 3000ms my web page is get refreshing although I haven't use location.reload function in Js. I would like to tell you that instead of refreshing the page, I am replacing the complete HTML elements of page. Kindly please help me for solving this issue.

This is my Js code where I am receiving data from Controller.

function getfab(id,jArray,otab){    
var arr=jArray;
$.ajax({
   type:'POST',
   url:'/designshirts',
   data:{fabid : id, carr : arr, typ : 'fabric', t : otab},
   beforeSend: function() {
      $(".et-small-loader").show();
   },
   headers: {
'X-CSRF-TOKEN': $('meta[name="csrf-token"]').attr('content')
    },
   success:function(data){         
        $('body').html(data);
        setTimeout($(".et-small-loader").fadeOut(),1000);
   }
});
}

Here from .html(data) I am replacing my html in Blade.