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Eslint参考手册

规则 | Rules

consistent-this

通常需要捕获当前的执行环境以便随后可用。一个突出的例子是 jQuery 回调:

var that = this;
jQuery('li').click(function (event) {
    // here, "this" is the HTMLElement where the click event occurred
    that.setFoo(42);
});

有许多常用this的别名,例如thatselfme。希望确保团队同意的任何别名在整个应用程序中一致使用。

规则细节

此规则对于指定this别名的变量强制执行两项操作:

  • 如果声明了具有指定名称的变量,则必须对其初始化(在声明中)或赋值(与声明在同一范围内)该值this
  • 如果一个变量被初始化或赋值this,变量的名称必须是一个指定的别名。

选项

此规则具有一个或多个字符串选项:

  • 指定的别名this(默认"that")这个规则的错误代码示例默认"that"选项:/ * eslint consistent-this:["error", "that"]*/ var that = 42; var self = this; that = 42; self = this;Examples of correct code for this rule with the default "that" option:/*eslint consistent-this: ["error", "that"]*/ var that = this; var self = 42; var self; that = this; foo.bar = this;
  • 如果变量未初始化,则使用默认选项对此规则进行错误代码示例"that":/ * eslint consistent-this: ["error", "that"]*/ var that; function f() { that = this; }
  • 此规则的默认代码正确的示例"that"选项,如果该变量未初始化: ["error", "that"]*/ var that; that = this; var foo, that; foo = 42; that = this;
  • 当不使用它如果你需要捕获嵌套环境,consistent-this将会有问题。该性质的代码通常难以阅读和维护,您应该考虑重构它。版本此规则在ESLint 0.0.9中引入。
  • Rule source
  • Documentation source

规则 | Rules相关

1.accessor-pairs
2.array-bracket-newline
3.array-bracket-spacing
4.array-callback-return
5.array-element-newline
6.arrow-body-style
7.arrow-parens
8.arrow-spacing
9.block-scoped-var
10.block-spacing
11.brace-style
12.callback-return
13.camelcase
14.capitalized-comments
15.class-methods-use-this
16.comma-dangle
17.comma-spacing
18.comma-style
19.complexity
20.computed-property-spacing
21.consistent-return
22.constructor-super
23.curly
24.default-case
25.dot-location
26.dot-notation
27.eol-last
28.eqeqeq
29.for-direction
30.func-call-spacing
31.func-name-matching
32.func-names
33.func-style
34.function-paren-newline
35.generator-star
36.generator-star-spacing
37.getter-return
38.global-require
39.global-strict
40.guard-for-in
41.handle-callback-err
42.id-blacklist
43.id-length
44.id-match
45.implicit-arrow-linebreak
46.indent
47.indent-legacy
48.init-declarations
49.jsx-quotes
50.key-spacing
51.keyword-spacing
52.line-comment-position
53.linebreak-style
54.lines-around-comment
55.lines-around-directive
56.lines-between-class-members
57.max-depth
58.max-len
59.max-lines
60.max-nested-callbacks
61.max-params
62.max-statements
63.max-statements-per-line
64.multiline-comment-style
65.multiline-ternary
66.new-cap
67.new-parens
68.newline-after-var
69.newline-before-return
70.newline-per-chained-call
71.no-alert
72.no-array-constructor
73.no-arrow-condition
74.no-await-in-loop
75.no-bitwise
76.no-buffer-constructor
77.no-caller
78.no-case-declarations
79.no-catch-shadow
80.no-class-assign
81.no-comma-dangle
82.no-compare-neg-zero
83.no-cond-assign
84.no-confusing-arrow
85.no-console
86.no-const-assign
87.no-constant-condition
88.no-continue
89.no-control-regex
90.no-debugger
91.no-delete-var
92.no-div-regex
93.no-dupe-args
94.no-dupe-class-members
95.no-dupe-keys
96.no-duplicate-case
97.no-duplicate-imports
98.no-else-return
99.no-empty
100.no-empty-character-class
Eslint

ESLint 是一个代码规范和错误检查工具,有以下几个特性。所有东西都是可以插拔的。你可以调用任意的 rule api 或者 formatter api 去打包或者定义 rule or formatter。任意的 rule 都是独立的。没有特定的 coding style,你可以自己配置。

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1.指南 | Guide
2.规则 | Rules