javascript - Ajax validate response data that is not an empty page -

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i'm using ajax populate page (server side) fetch content , display in main window. not have problems ajax, lot of time reponse data empty page <html></html>.
when check in console ->network->page.html ,

  • status code ok

    response headers

  • http/1.1 200 ok
  • pragma: no-cache
  • refresh: 1; url=http://balbla.com/page.html
  • connection: close
  • content-type: text/html

then in response tab - > <html></html>

my question how can validate in success function data not empty html page, before running commands below, otherwise, end blank page. 

$.ajax({ type: "post", url: 'http://balbla.com/page.html', data: 'country=' + user_country, success: function(data) {      $pagewrap.fadeout(1000, function() {         $('link[href="css/main.css"]').attr('href', $css);         $pagewrap.hide().html(data).fadein(500);         $.getscript($scripts);     }); }, error: function(xhr, textstatus, error) {     alert('error fecthing page')  ;  } });

thanks

you can strip html tags off response string , calculate it's length.

html tag strip function taken from: strip html text javascript

function strip(html) {    var tmp = document.createelement("div");    tmp.innerhtml = html;    return tmp.textcontent || tmp.innertext || ""; }

then in ajax function:

success: function(data) { if(strip(data).length > 0) {    // content not empty }

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