Comments on: 256b JavaScript demos

By: SkyLined

SkyLined — Sun, 02 Jan 2011 15:45:00 +0000

Thanks Peter: I was not aware of that feature! For the Julia set you can use another trick to round down the floating point number: “[~~(i/3)]” instead of “.charAt(i/3)” saves three bytes. As you suggested, MSIE requires the right DTD to be set, so the new code doesn’t work in MSIE. However, the bytes saved allow me to use innerHTML and “
” instead of innerText and “\n”, which means these new versions work on Firefox. I’ve added them to the post.

By: Peter Ferrie

Peter Ferrie — Sat, 01 Jan 2011 22:34:39 +0000

In HTML 4.0 and later, strings can be accessed like arrays, so the charAt can be replaced by [] in the Mandelbrot set. It would need a bit of cheating to include it in a page that has the DTD set correctly, though.
The Julia set can’t take advantage of it because you’d need an integer divide to access the array without error.

By: SkyLined

SkyLined — Tue, 07 Apr 2009 11:50:14 +0000

FireFox does not support “innerText”. They both use that to output the fractal, so they won’t work with FireFox.

They should work with Chrome, MSIE, Opera and Safari, though the later seems to require you to repeatedly click inside the window to update the screen; I have no clue why.

By: Tyler Oderkirk

Tyler Oderkirk — Thu, 04 Sep 2008 06:06:57 +0000

These produce no output in my Firefox 3.0.1 on Linux.
—snip
Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.0.1) Gecko/2008072820 Firefox/3.0.1)
—snip

They run great simultaneously in their own tabs in Google Chrome 0.2.149.27 on Windows XP however.

Thanks for sharing,

-Tyler