location.reload();

setInterval(function() {
    if (navigator.onLine) {
        location.reload();
    }
}, 120000); /* 120000 ~> 2 minutes */

setInterval(function() {
    $.when(
        $.ajax({
            url  : "/favicon.ico", /* or other resource */
            type : "HEAD"
        })
    )
    .done(function() {
        location.reload();
    });
}, 120000); /* 120000 ~> 2 minutes */

if (navigator.onLine) {
    //Actions
}

var clrInterval=null;
clrInterval = setInterval(function(){
    $.ajax({
       url:'',data:'',
       success:function(data);{
         if(data=='no-success') {
            // your code if no-success
         } else {
            clearInterval(clrInterval);// clear interval if you get success
         }
       }
    });
},5000);