func-call-spacing
要求或不允许函数标识符和它们的调用之间有空格
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.
调用函数时，开发者可以在函数名称和调用它的括号之间插入可选的空格。以下成对的函数调用是等价的：
¥When calling a function, developers may insert optional whitespace between the function’s name and the parentheses that invoke it. The following pairs of function calls are equivalent:
alert('Hello');
alert ('Hello');
console.log(42);
console.log (42);
new Date();
new Date ();
规则详情
¥Rule Details
此规则要求或不允许函数名和调用它的左括号之间有空格。
¥This rule requires or disallows spaces between the function name and the opening parenthesis that calls it.
选项
¥Options
此规则有一个字符串选项：
¥This rule has a string option:
-
"never"（默认）不允许函数名称和左括号之间有空格。¥
"never"(default) disallows space between the function name and the opening parenthesis. -
"always"要求函数名称和左括号之间有空格。¥
"always"requires space between the function name and the opening parenthesis.
此外，在 "always" 模式下，可以使用包含单个布尔 allowNewlines 属性的第二个对象选项。
¥Further, in "always" mode, a second object option is available that contains a single boolean allowNewlines property.
never
使用默认 "never" 选项的此规则的错误代码示例：
¥Examples of incorrect code for this rule with the default "never" option:
/*eslint func-call-spacing: ["error", "never"]*/
fn ();
fn
();
使用默认 "never" 选项的此规则的正确代码示例：
¥Examples of correct code for this rule with the default "never" option:
/*eslint func-call-spacing: ["error", "never"]*/
fn();
always
使用 "always" 选项的此规则的错误代码示例：
¥Examples of incorrect code for this rule with the "always" option:
/*eslint func-call-spacing: ["error", "always"]*/
fn();
fn
();
使用 "always" 选项的此规则的正确代码示例：
¥Examples of correct code for this rule with the "always" option:
/*eslint func-call-spacing: ["error", "always"]*/
fn ();
allowNewlines
默认情况下，"always" 不允许换行。要在 "always" 模式下允许换行，请将 allowNewlines 选项设置为 true。从来不需要换行符。
¥By default, "always" does not allow newlines. To permit newlines when in "always" mode, set the allowNewlines option to true. Newlines are never required.
启用了 allowNewlines 选项的此规则的错误代码示例：
¥Examples of incorrect code for this rule with allowNewlines option enabled:
/*eslint func-call-spacing: ["error", "always", { "allowNewlines": true }]*/
fn();
启用 allowNewlines 选项后此规则的正确代码示例：
¥Examples of correct code for this rule with the allowNewlines option enabled:
/*eslint func-call-spacing: ["error", "always", { "allowNewlines": true }]*/
fn (); // Newlines are never required.
fn
();
何时不使用
¥When Not To Use It
如果你的项目不关心在函数调用中强制使用一致的间距样式，则可以安全地关闭此规则。
¥This rule can safely be turned off if your project does not care about enforcing a consistent style for spacing within function calls.
兼容性
¥Compatibility
相关规则
版本
此规则是在 ESLint v3.3.0 中引入。