semi-spacing

在分号前后强制保持一致的间距

一些该规则报告的问题可以通过 --fix 命令行选项 自动修复

JavaScript 允许您在分号之前或之后放置不必要的空格。

禁止或强制使用分号周围的空格可以提高程序的可读性。

var a = "b" ;

var c = "d";var e = "f";

规则详情

此规则旨在强制在分号周围使用空格。此规则防止在表达式中的分号前使用空格。

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选项

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    "semi-spacing": ["error", {"before": false, "after": true}]

{"before": false, "after": true}

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/*eslint semi-spacing: "error"*/

var foo ;
var foo;var bar;
throw new Error("error") ;
while (a) { break ; }
for (i = 0 ; i < 10 ; i++) {}
for (i = 0;i < 10;i++) {}

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/*eslint semi-spacing: "error"*/

var foo;
var foo; var bar;
throw new Error("error");
while (a) { break; }
for (i = 0; i < 10; i++) {}
for (;;) {}
if (true) {;}
;foo();

{"before": true, "after": false}

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/*eslint semi-spacing: ["error", { "before": true, "after": false }]*/

var foo;
var foo ; var bar;
throw new Error("error");
while (a) { break; }
for (i = 0;i < 10;i++) {}
for (i = 0; i < 10; i++) {}

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/*eslint semi-spacing: ["error", { "before": true, "after": false }]*/

var foo ;
var foo ;var bar ;
throw new Error("error") ;
while (a) {break ;}
for (i = 0 ;i < 10 ;i++) {}

何时不使用

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