大数运算

[RubyLouvre]

From Firebug console in Firefox 3.6.3

>>> 100==99.99
false
>>> 100==99.999
false
>>> 100==99.9999
false
>>> 100==99.99999
false
>>> 100==99.999999
false
>>> 100==99.9999999
false
>>> 100==99.99999999
false
>>> 100==99.999999999
false
>>> 100==99.9999999999
false
>>> 100==99.99999999999
false
>>> 100==99.999999999999
false
>>> 100==99.9999999999999
false
>>> 100==99.99999999999999
false
>>> 100==99.999999999999999
true

[RubyLouvre]

You will need a database that exposes itself over HTTP like couchDB. Without database access over HTTP it is not possible.

As for javascript frameworks you have two options

1. Use a big library that does everything.
2. Use many specific libraries

Some of the big libraries include: YUI3, Dojo, Goog, JavaScriptMVC

As for specific libraries for the tasks involved.

• Backbone or Spine for your client-side MVC
• Modernizr, ES5-shim, Selectivizr for your cross-browser support
• Flow core for patching the DOM for cross-browser support
• Davis or Crossroads for client-side routing

You also need a database that exposes itself over HTTP like CouchDB. You need to set up HTTPS and authentication properly for security.

Of course you lose non-javascript support.

All in all though I would not recommend using such a stack for your generic enterprise business application. It can be used for REST services.

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