Hacker News Reader

> it's horrible for developers to use and no-one I know advocates it

I've seen developers advocate for document.write to inject locally-hosted JavaScript as a fallback for when CDNs are down: https://www.hanselman.com/blog/CDNsFailButYourScriptsDontHav...

I definitely don't agree with this method, but there you go. Apparently ASP.NET 4.5 will even insert this pattern automatically.

View on HN

You could still insert <script> elements, you just wouldn't do it with document.write().

I may be wrong, but I think that document.write() will load the script synchronously while inserting a `script` element will not.

You can set async=false on a dynamic script element to avoid the default asynchronous behaviour.

I just looked at the support matrix: IE10+. So it is reasonably supported nowadays, nice :-)

Working on the web is refreshing like that these days — so many things which used to be painful are now just standards + “Microsoft doesn't support that old version of IE and neither do we”.

Reply on news.ycombinator.com