Optimising Where It Hurts

Slides

The slides for my talk are available on SlideShare.

Tests

These are the tests I used while researching performance.

• Bitwise Is it always slower than not-using bitwise?
• Variable Scoping
  • 200 scopes
  • 100 scopes (for Opera)
  • 200 scopes with eval
  • 100 scopes with eval (for Opera)
• Closure Memory Usage Do browsers clean up variables that aren't used?
• Creating Elements What's the fastest way to create large DOM trees
• Back-Forward Page Cache Which browsers support back-forward page caching?
• Selector Libraries Does how you select an element affect performance?

Jake Archibald - jaffathecake@gmail.com