Javascript UI Toolkit

I'm looking for a light-weight UI toolkit wri开发者_如何学Ctten in Javascript (something like Swing) but I'd rather not use ExtJS because I fear that will slow things down tremendously. Are there any small UI toolkits out there that mainly focus on layouts?

The problems I face in particular are working with layouts. A lot of toolkits come with different layout styles (Floating, Grid, Split Panes) and that is quite hard with CSS (especially heights extending 100%). It's also to be used as a framework for other developers to easily create layouts and just apply their own CSS (for themes).

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Try, UKI Simple UI Kit

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Have a look at http://qooxdoo.org as well.

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Edited: If it's just about layout, did you consider using just a CSS framework (e. g. Blueprint)?

This is a great tool for building CSS http://compass-style.org.

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You can look into one of the following

• YUI (components)
• Sproutcore (full framework)
• Cappuccino (full framework, written in Objective-j, interpreted to JS)
• Google webtoolkit (written in java, compiled to JS)

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jQuery gzips its minified version to about 24k, and is as robust as you will need for that 24k. You can also link your pages to it through Google's hosting.