Slow performance

Introduction

Since Rucksack’s Javascript hasn’t really been optimised yet, you may find that on certain mobile devices (e.g. Nokia Internet Tablets) the interface can get very slow.

Causes

• mousemove handler for #content (PageHoverHandlerFunc)
• Re-binding in Page.rebind
• Re-creating jQuery objects when storing them would be more appropriate
• RJS handlers not optimized

Solutions

• Bind PageHoverHandlerFunc to mousedown instead (appropriate if the device is touch-based)
• Split page re-binding up so elements which will not be in the page won’t be binded
• Store copies of frequently accessed jQuery objects
• Re-write RJS handlers