1) Open https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest/Using_XMLHttpRequest (I dont know why this particular url matters, but others are doing something else for me so use this one -- 2) Run this in the console on an HTTPs page in various versions of chrome, 47/48 appear to swallow the error with nothing logged - 41 appears to l…

gistfile1.txt

var oReq;

try{
    oReq = new XMLHttpRequest();
    oReq.addEventListener("load", function () { console.log("success event"); });
    oReq.addEventListener("error", function () { console.error("error event"); });
    oReq.open("GET", "http://www.example.org/example.txt");
    oReq.send();
} catch (e) {
   console.error("error thrown");
}