request success despite failure

README.md

Run this file on your local machine without a web server

It should fail because (a) chrome doesn't allow requests on a local machine (b) submit.php doesn't exist (or shouldn't in this directory)

But it claims to succeed!

test.html

<script src="https://d3js.org/d3.v3.min.js" charset="utf-8"></script>

<script>
function callback() { console.log("SUCCESS... even though success is impossible because the file doesn't exist"); }

d3.xhr('submit.php', 'application/x-www-form-urlencoded', callback)
    .header('content-type', 'application/x-www-form-urlencoded')
    .post('data=' + encodeURIComponent(JSON.stringify({hello: "world"}, null, " ")))
        .on('error', function (error) {
            console.log('ERROR: ' + error);
        });
</script>