JSCS — JavaScript Code Style (mostly taken from Angular.js with a few tweaks)

.jscsrc

{
    "excludeFiles": ["node_modules/**", "api_docs/**"],
    "disallowEmptyBlocks": true,
    "disallowKeywordsOnNewLine": ["else"],
    "disallowKeywords": ["with"],
    "disallowMixedSpacesAndTabs": true,
    "disallowNewlineBeforeBlockStatements": true,
    "disallowSpaceAfterObjectKeys": true,
    "disallowSpaceAfterPrefixUnaryOperators": ["++", "--", "+", "-", "~", "!"],
    "disallowSpaceBeforeBinaryOperators": [","],
    "disallowSpaceBeforePostfixUnaryOperators": ["++", "--"],
    "disallowSpacesInAnonymousFunctionExpression": {
      "beforeOpeningRoundBrace": true
    },
    "disallowSpacesInCallExpression": true,
    "disallowSpacesInFunctionDeclaration": {
      "beforeOpeningRoundBrace": true
    },
    "disallowSpacesInNamedFunctionExpression": {
      "beforeOpeningRoundBrace": true
    },
    "disallowTrailingComma": true,
    "disallowTrailingWhitespace": true,
    "requireCommaBeforeLineBreak": true,
    "requireCurlyBraces": [
        "if",
        "else",
        "for",
        "while",
        "do",
        "try",
        "catch"
    ],
    "requireSpaceAfterBinaryOperators": ["?", ":", "+", "-", "/", "*", "%", "==", "===", "!=", "!==", ">", ">=", "<", "<=", "&&", "||"],
    "requireSpaceBeforeBinaryOperators": ["?", ":", "+", "-", "/", "*", "%", "==", "===", "!=", "!==", ">", ">=", "<", "<=", "&&", "||"],
    "requireSpaceBeforeKeywords": [
        "else",
        "while",
        "catch"
    ],
    "requireSpaceAfterKeywords": ["if", "else", "for", "while", "do", "switch", "return", "try", "catch"],
    "requireSpaceBeforeObjectValues": true,
    "requireSpaceBetweenArguments": true,
    "requireSpacesInConditionalExpression": {
        "afterTest": true,
        "beforeConsequent": true,
        "afterConsequent": true,
        "beforeAlternate": true
    },
    "requireSpacesInForStatement": true,
    "requireSpacesInFunction": {
      "beforeOpeningCurlyBrace": true
    },
    "requireSpacesInsideObjectBrackets": "all",
    "validateParameterSeparator": ", "
}