Javascript Best Practices [closed]

Question

Seconding Javascript: The Good Parts and Resig's book Secrets of the Javascript Ninja.

Here are some tips for Javascript:

• Don't pollute the global namespace (put all functions into objects/closures)
  • Take a look at YUI, it's a huge codebase with only 2 global objects: YAHOO and YAHOO_config
• Use the Module pattern for singletons (http://yuiblog.com/blog/2007/06/12/module-pattern/)
• Make your JS as reusable as possible (jQuery plugins, YUI modules, basic JS objects.) Don't write tons of global functions.
• Don't forget to var your variables
• Use JSlint : http://www.jslint.com/
• If you need to save state, it's probably best to use objects instead of the DOM.

I disagree to the "use a framework" statement to some degree. Too many people use frameworks blindly and have little or no understanding of what's going on behind the curtains.

I liked JavaScript:The Good Parts by Douglas Crockford although it's focused entirely on the language and ignores the DOM altogether.

If you don't feel like reading you can watch this video: JavaScript the good parts by Doug Crockford.