Some JavaScript practices

• It is best to declare variables in one statement, i.e. use the single var pattern.
• Avoid eval. Use $.parseJSON().
• Pass arguments as objects rather than individual variables
• Take care to structure your function body properly, or else you’ll fall prey to hoisting. Declaring local variables anywhere with a function body would automatically hoist them to the top.
• Make use of the memoization pattern to reduce re-computation. I found it very useful when working with d3.js
• You need not use document.ready if you’re including your scripts at the bottom already.

More to come…