Question

Using Knockout with the Underscore.js template engine…

• When I try to bind 2004 list items to a ul DOM element, IE8 chokes and pops up a “slow running script” warning.
• At first, I thought that this solution would solve my problem. Unfortunately, it did
  not.
• So I used Google Chrome’s profiler. It claims that my code is spending most of its time in a.c.options.update.
  • So I’m led to believe that the template binding is executing over 5 million consecutive Javascript statements, and that I need to throttle this binding somehow, perhaps with setTimeout statements.

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My Two-Part Question:

• Am I pursuing this problem correctly?
• If so, can I throttle Underscore.js’s templating engine (inside of the foreach which renders my ul DOM element?

Answer 1

If it helps anyone else, the template rendering was not my problem.

I fixed this issue be eliminating some expensive computed observables and favoring manual subscriptions.