steveharoz/test.html

## test.html
<!DOCTYPE html>
<meta charset="utf-8">
<script src="https://d3js.org/d3.v4.0.0-rc.2.min.js"></script>
<script>

function callback1(arg1) {
    console.log("COMPLETED. arg1:" + arg1);
    console.log(arg1)
}
function callback2(arg1, arg2) {
    console.log("COMPLETED. arg1:" + arg1);
    console.log(arg1)
}

d3.request("invalid:///url")
    .post(callback1); // callback parameter is null (maybe because signature is bad?)

d3.request("invalid:///url")
    .post(callback2); // callback parameter shows error

</script>
	<!DOCTYPE html>
	<meta charset="utf-8">
	<script src="https://d3js.org/d3.v4.0.0-rc.2.min.js"></script>
	<script>

	function callback1(arg1) {
	console.log("COMPLETED. arg1:" + arg1);
	console.log(arg1)
	}
	function callback2(arg1, arg2) {
	console.log("COMPLETED. arg1:" + arg1);
	console.log(arg1)
	}

	d3.request("invalid:///url")
	.post(callback1); // callback parameter is null (maybe because signature is bad?)

	d3.request("invalid:///url")
	.post(callback2); // callback parameter shows error

	</script>