Enforce location of semicolons (semi-style)

The --fix option on the command line can automatically fix some of the problems reported by this rule.

命令行中的 --fix 选项可以自动修复一些该规则报告的问题。

Generally, semicolons are at the end of lines. However, in semicolon-less style, semicolons are at the beginning of lines. This rule enforces that semicolons are at the configured location.

通常，分号出现在行尾。然而，在 semicolon-less 风格中，分号出现行首。该规则强制分号出现在配置的位置。

Rule Details

This rule reports line terminators around semicolons.

该规则报告分号周围的行终止符。

This rule has an option.

该规则有一个选项。

{
    "semi-style": ["error", "last"],
}

"last" (Default) enforces that semicolons are at the end of statements.
"last" (默认) 强制分号出现在句子末尾。
"first" enforces that semicolons are at the beginning of statements. Semicolons of for loop heads (for(a;b;c){}) should be at the end of lines even if you use this option.
"first" 强制分号出现在句子开头。for 循环中的分号 (for(a;b;c){}) 即使使用了该选项，也要出现在行尾。

Examples of incorrect code for this rule with "last" option:

选项 "last" 的错误代码示例：

/*eslint semi-style: ["error", "last"]*/

foo()
;[1, 2, 3].forEach(bar)

for (
    var i = 0
    ; i < 10
    ; ++i
) {
    foo()
}

Examples of correct code for this rule with "last" option:

选项 "last" 的正确代码示例：

/*eslint semi-style: ["error", "last"]*/

foo();
[1, 2, 3].forEach(bar)

for (
    var i = 0;
    i < 10;
    ++i
) {
    foo()
}

Examples of incorrect code for this rule with "first" option:

选项 "first" 的错误代码示例：

/*eslint semi-style: ["error", "first"]*/

foo();
[1, 2, 3].forEach(bar)

for (
    var i = 0
    ; i < 10
    ; ++i
) {
    foo()
}

Examples of correct code for this rule with "first" option:

选项 "first" 的正确代码示例：

/*eslint semi-style: ["error", "first"]*/

foo()
;[1, 2, 3].forEach(bar)

for (
    var i = 0;
    i < 10;
    ++i
) {
    foo()
}

When Not To Use It

If you don’t want to notify the location of semicolons, then it’s safe to disable this rule.

如果你不想被通知分号的位置，你可以关闭此规则。

Version

This rule was introduced in ESLint 4.0.0-beta.0.

该规则在 ESLint 4.0.0-beta.0 中被引入。

Enforce location of semicolons (semi-style)

Rule Details

When Not To Use It

Related rules

Version

Resources