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Code style guide
cederberg edited this page Oct 12, 2010
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1 revision
MochiKit's coding conventions largely follow that of Python's PEP 8 and PEP 7 (in that order of precedence), but there are a number of JavaScript-specific points:
- NEVER modify a built-in object or its prototype (e.g. don't do this:
Object.prototype.foo = REALLY_BAD!
). Prefer functions instead. - Use the typeof operator as if it were a function:
typeof(x)
instead oftypeof x
- Use parentheses for the arguments when using a constructor:
new Error("foo")
instead ofnew Error, foo
- Always use fully qualified references to all other functions, and don't use the symbolic convenience aliases:
- use
MochiKit.DOM.getElement(x)
instead of$(x)
- use
MochiKit.Logging.logFatal(x)
instead oflogFatal(x)
- use
MochiKit.ThisModule.exportedFunction(x)
instead ofexportedFunction(x)
- use
- Always use a newline after an opening brace, as if it were a colon in Python
- Use PEP 8 spacing whenever applicable, such as spaces between operators:
i = 0
instead ofi=0
,"foo" + sig + "bar"
instead of"foo"+sig+"bar"
, etc. - Never use more than one space except for the indent. In other words, don't try and make code line up as if it were a spreadsheet.