tpow tpow - 4 months ago 12
Javascript Question

Shortest way to print current year in Javascript

I need to update a few hundred static Html pages that have the copyright date hard coded in the footer. I want to replace it with some javascript that will automatically update each year.

Currently I'm using:

<script type="text/javascript">var year = new Date();document.write(year.getFullYear());</script>

Is this as short as it gets?


Here's the shortest I can get it:

<script>document.write(new Date().getFullYear())</script>

That will work in all browsers I've run across.

How I got there:

  • You can just call getFullYear directly on the newly-created Date, no need for a variable. new Date().getFullYear() may look a bit odd, but it's reliable: the new Date() part is done first, then the .getFullYear().
  • You can drop the type, because JavaScript is the default; this is even documented as part of the HTML5 specification, which is likely in this case to be writing up what browsers already do.
  • You can drop the semicolon at the end for one extra saved character, because JavaScript has "automatic semicolon insertion," a feature I normally despise and rail against, but in this specific use case it should be safe enough.

It's important to note that this only works on browsers where JavaScript is enabled. Ideally, this would be better handled as an offline batch job (sed script on *nix, etc.) once a year, but if you want the JavaScript solution, I think that's as short as it gets. (Now I've gone and tempted fate.)