quotes

强制一致使用反引号、双引号或单引号

🔧 Fixable

此规则报告的一些问题可通过 --fix 命令行选项自动修复

此规则在 ESLint v8.53.0 中已弃用。请在 @stylistic/eslint-plugin-js 中使用 相应的规则

¥This rule was deprecated in ESLint v8.53.0. Please use the corresponding rule in @stylistic/eslint-plugin-js.

JavaScript 允许你以三种方式之一定义字符串:双引号、单引号和反引号(从 ECMAScript 6 开始)。例如:

¥JavaScript allows you to define strings in one of three ways: double quotes, single quotes, and backticks (as of ECMAScript 6). For example:

var double = "double";
var single = 'single';
var backtick = `backtick`;    // ES6 only

这些行中的每一行都创建一个字符串,在某些情况下,可以互换使用。选择如何在代码库中定义字符串是模板字面量之外的一种风格选择(允许解释嵌入的表达式)。

¥Each of these lines creates a string and, in some cases, can be used interchangeably. The choice of how to define strings in a codebase is a stylistic one outside of template literals (which allow embedded expressions to be interpreted).

许多代码库要求以一致的方式定义字符串。

¥Many codebases require strings to be defined in a consistent manner.

规则详情

¥Rule Details

此规则强制一致地使用反引号、双引号或单引号。

¥This rule enforces the consistent use of either backticks, double, or single quotes.

此规则知道诸如 "use strict" 之类的指令序言,如果这样做会改变指令序言的解释方式,则不会标记或自动修复它们。

¥This rule is aware of directive prologues such as "use strict" and will not flag or autofix them if doing so will change how the directive prologue is interpreted.

选项

¥Options

该规则有两个选项,一个字符串选项和一个对象选项。

¥This rule has two options, a string option and an object option.

字符串选项:

¥String option:

  • "double"(默认)要求尽可能使用双引号

    ¥"double" (default) requires the use of double quotes wherever possible

  • "single" 要求尽可能使用单引号

    ¥"single" requires the use of single quotes wherever possible

  • "backtick" 要求尽可能使用反引号

    ¥"backtick" requires the use of backticks wherever possible

对象选项:

¥Object option:

  • "avoidEscape": true 允许字符串使用单引号或双引号,只要字符串包含必须转义的引号

    ¥"avoidEscape": true allows strings to use single-quotes or double-quotes so long as the string contains a quote that would have to be escaped otherwise

  • "allowTemplateLiterals": true 允许字符串使用反引号

    ¥"allowTemplateLiterals": true allows strings to use backticks

已弃用:对象属性 avoid-escape 已弃用;请改用对象属性 avoidEscape

¥Deprecated: The object property avoid-escape is deprecated; please use the object property avoidEscape instead.

double

使用默认 "double" 选项的此规则的错误代码示例:

¥Examples of incorrect code for this rule with the default "double" option:

在线运行
/*eslint quotes: ["error", "double"]*/

var single = 'single';
var unescaped = 'a string containing "double" quotes';
var backtick = `back\ntick`; // you can use \n in single or double quoted strings

使用默认 "double" 选项的此规则的正确代码示例:

¥Examples of correct code for this rule with the default "double" option:

在线运行
/*eslint quotes: ["error", "double"]*/

var double = "double";
var backtick = `back
tick`;  // backticks are allowed due to newline
var backtick = tag`backtick`; // backticks are allowed due to tag

single

使用 "single" 选项的此规则的错误代码示例:

¥Examples of incorrect code for this rule with the "single" option:

在线运行
/*eslint quotes: ["error", "single"]*/

var double = "double";
var unescaped = "a string containing 'single' quotes";

使用 "single" 选项的此规则的正确代码示例:

¥Examples of correct code for this rule with the "single" option:

在线运行
/*eslint quotes: ["error", "single"]*/

var single = 'single';
var backtick = `back${x}tick`; // backticks are allowed due to substitution

backticks

使用 "backtick" 选项的此规则的错误代码示例:

¥Examples of incorrect code for this rule with the "backtick" option:

在线运行
/*eslint quotes: ["error", "backtick"]*/

var single = 'single';
var double = "double";
var unescaped = 'a string containing `backticks`';

使用 "backtick" 选项的此规则的正确代码示例:

¥Examples of correct code for this rule with the "backtick" option:

在线运行
/*eslint quotes: ["error", "backtick"]*/

"use strict"; // directives must use single or double quotes
var backtick = `backtick`;
var obj = { 'prop-name': `value` }; // backticks not allowed for property names

avoidEscape

使用 "double", { "avoidEscape": true } 选项的此规则的附加正确代码示例:

¥Examples of additional correct code for this rule with the "double", { "avoidEscape": true } options:

在线运行
/*eslint quotes: ["error", "double", { "avoidEscape": true }]*/

var single = 'a string containing "double" quotes';

使用 "single", { "avoidEscape": true } 选项的此规则的附加正确代码示例:

¥Examples of additional correct code for this rule with the "single", { "avoidEscape": true } options:

在线运行
/*eslint quotes: ["error", "single", { "avoidEscape": true }]*/

var double = "a string containing 'single' quotes";

使用 "backtick", { "avoidEscape": true } 选项的此规则的附加正确代码示例:

¥Examples of additional correct code for this rule with the "backtick", { "avoidEscape": true } options:

在线运行
/*eslint quotes: ["error", "backtick", { "avoidEscape": true }]*/

var double = "a string containing `backtick` quotes"

allowTemplateLiterals

使用 "double", { "allowTemplateLiterals": true } 选项的此规则的附加正确代码示例:

¥Examples of additional correct code for this rule with the "double", { "allowTemplateLiterals": true } options:

在线运行
/*eslint quotes: ["error", "double", { "allowTemplateLiterals": true }]*/

var double = "double";
var double = `double`;

使用 "single", { "allowTemplateLiterals": true } 选项的此规则的附加正确代码示例:

¥Examples of additional correct code for this rule with the "single", { "allowTemplateLiterals": true } options:

在线运行
/*eslint quotes: ["error", "single", { "allowTemplateLiterals": true }]*/

var single = 'single';
var single = `single`;

{ "allowTemplateLiterals": false } 不会禁止使用所有模板字面。如果你想禁止任何模板字面实例,请使用 no-restricted-syntax 并定位 TemplateLiteral 选择器。

¥{ "allowTemplateLiterals": false } will not disallow the usage of all template literals. If you want to forbid any instance of template literals, use no-restricted-syntax and target the TemplateLiteral selector.

何时不使用

¥When Not To Use It

如果你不需要字符串样式的一致性,你可以安全地禁用此规则。

¥If you do not need consistency in your string styles, you can safely disable this rule.

版本

此规则是在 ESLint v0.0.7 中引入。

资源

ESLint 中文网
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