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Editorial Team
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Asked: 2026-05-23T12:06:42+00:00

I have this code: … function init() { getdata(); } var txt; function getdata()

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I have this code:

...

  function init() {
      getdata();
  }

  var txt;
  function getdata() {
      var xhr = new XMLHttpRequest();
      xhr.open('GET',myurl, true);
      xhr.setRequestHeader('Cache-Control', 'no-cache');
      xhr.setRequestHeader('Pragma', 'no-cache');
      xhr.onreadystatechange = function() {
          if (xhr.readyState == 4) if (xhr.responseText) {
              txt = xhr.responseText;
          }
      }

      xhr.send();
      console.log(txt);
  }

...

<body onload="init();">

...

Why can’t I get txt value? Please help.
forgot to mention – all of this happens in background page, i dont have any other pages at the moment. i tried console via extensions overview for background page, but that console doesnt output anything.. :((

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1 Answer

  1. Editorial Team

    The XHR request is asynchronous, so when you log txt to console immediately after sending it, the request hasn’t completed yet so txt is undefined.

    Either set it be run synchronously by setting async to false in the open command, or just stick console.log(txt) in the function you have bound to the onreadystatechange event already.

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