javascript.md

Javascript guidelines

Formating

• Never ever use tabs to indent, always 2 spaces
• Indent continued lines 2 spaces

Code

• Avoid semicolons unless necessary
• Prefer multiple var statements over leading ,
• Use trailing commas in arrays and objects
• Use namespaces, don't clutter global namespace unless necessary
• Use CamelCase for prototypes, smallCamelCase for variables and functions, SCREAMING_SNAKE_CASE for constants
• Avoid functions with more than 15 lines
• Avoid prototype definitions with more than 200 lines
• Avoid functions with more than 4 parameters
• Avoid functions with more than 3 return values in callback
• Prefer single quotes for strings
• Prefer an asynchronous workflow over a synchronous one
• Avoid more than 3 nested callbacks
• Never pass setTimeout a string to call
• Use return as early as possible
• Use named closures if it adds value
• Use events freely