JSLINT will catch basically all of these problems for you automatically, with it you don't have to worry about improperly parsed code, semi-colon insertion, ==,

JSLINT will catch basically all of these problems for you automatically, with it you don't have to worry about improperly parsed code, semi-colon insertion, ==, for in, the stupid constructors like new Function and new Object, implied globals, or most of the crap in the language. There are still some deep problems with JavaScript that no tool, not even JSLINT can fix, like the fact that the language uses + for both concatenation and addition, there is no namespaces, there is no way to create immutable objects, etc. I recommend you use a good IDE (like Eclipse) and hook it up with JSLINT so that you can ensure that you don't ever accidentally create global variables or create statements that the parser doesn't understand. http://www.rockstarapps.com/joomla-1.5.8/products/jslint-eclipse-plugin.html http://www.rockstarapps.com/joomla-1.5.8/products/jslint-ecl...