xmlhttp.onreadystatechange = function()

in code/app/static/main.js [71:83]

• 13 lines of code
• 4 McCabe index (conditional complexity)

    xmlhttp.onreadystatechange = function() {
        if (xmlhttp.readyState == XMLHttpRequest.DONE) {   // XMLHttpRequest.DONE == 4
           if (xmlhttp.status == 200) {
               renderGallery(xmlhttp.response);
           }
           else if (xmlhttp.status == 400) {
              alert('There was an error 400');
           }
           else {
               alert('something else other than 200 was returned');
           }
        }
    };