JavaScript Naming Conventions, Coding Guidelines and Best Practices

• Semicolons are always required.
• Braces are always used to enclose the bodies of if/for/while/try statements.
• Lines should be wrapped at a 120 column margin.
• Indentation should be consistent. Use an indentation length of 2 spaces.
• Double quotes (") are used rather than single quotes (').
• All class names should be a combination of words with the first letter of each word capitalized.
• The function names and method names should also be a combination of words with the first letter of each word capitalized except for the first word.
• It is a very common practice to begin functions with get/set/is word depending upon whether the function is returning a value, setting a value or returning a boolean result.
• All private member variables and methods of classes should be prefixed with "_" to distinguish them from public member variables.
• All global objects should exist in namespaces.
• All variables should be prefixed with a letter indicating the data type of the variable (Hungarian notation).

s - String
n - number
b - boolean
a - Array
o - object

Further, the first letter of each of the words should be capitalized.