ErrorEvent + onerror, order check

Result: Chrome fires them in the order they are attached by the user. (In this case, good, but bad in others.)

by James Greene

JavaScript

if (typeof window.ErrorEvent !== "undefined") {
    window.addEventListener("error", function() {
        document.body.innerHTML += "<div>ErrorEvent</div>";
    });
}
else {
    document.body.innerHTML += "<div>ErrorEvent not available in this browser</div>";
}

window.onerror = function() {
    document.body.innerHTML += "<div>onerror</div>";
}

throw new Error("WAT");