Before clicking the link, look at what this code does.

• Line 27 & 29: What do the first two for loops do?
• Line 36: Within the third for loop, what happens if (zr * zr) + (zi * zi) never gets to be greater than 4?
• Line 37: Is z%17 even necessary in this example?
• Line 14: How much difference is there when depth is a smaller number compared to a larger one?

Here’s the link to a simple HTML page consisting of the above source code (please give it a few seconds to paint every pixel in the window):

zapmap.com/programming/javascript/void4.html

The image is called the Mandelbrot Set.