Javascript demo - doing calculations on client side

Background: The Chaos Theory demo shows an amazing function where small changes in initial conditions lead to massive changes later.

The function on that page is implemented on the server side. But in fact we can do the calculations on the client side. So maybe we should. Why?

The server sends the program code to the client and the calculations are done there.
"View Source" to see.

• This re-calculates the result whenever focus leaves input box.
• parseFloat
• toFixed

λ: Start value for x: