useShorthandAssign

JavaScript (and super languages)

摘要

¥Summary

规则生效日期：v1.3.0

¥Rule available since: v1.3.0
诊断类别：lint/style/useShorthandAssign

¥Diagnostic Category: lint/style/useShorthandAssign
此规则包含 unsafe 修复程序。

¥This rule has an unsafe fix.
此规则的默认严重级别为 information。

¥The default severity of this rule is information.
来源：

¥Sources:
- 与 operator-assignment 相同
  
  ¥Same as operator-assignment

如何配置

¥How to configure

1
{
2
  "linter": {
3
    "rules": {
4
      "style": {
5
        "useShorthandAssign": "error"
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      }
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    }
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  }
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}

描述

¥Description

尽可能要求赋值运算符简写。

¥Require assignment operator shorthand where possible.

JavaScript 提供结合变量赋值和简单数学运算的简写运算符。

¥JavaScript provides shorthand operators combining a variable assignment and simple mathematical operation.

示例

¥Examples

无效

¥Invalid

1
a = a + 1;

code-block.js:1:1 lint/style/useShorthandAssign  FIXABLE  ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ℹ Assignment (=) can be replaced with operator assignment +=.
  
  > 1 │ a = a + 1;
      │ ^^^^^^^^^
    2 │ 
  
  ℹ Unsafe fix: Use += instead.
  
    1   │ - a·=·a·+·1;
      1 │ + a·+=·1;
    2 2 │

1
a = a - 1;

code-block.js:1:1 lint/style/useShorthandAssign  FIXABLE  ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ℹ Assignment (=) can be replaced with operator assignment -=.
  
  > 1 │ a = a - 1;
      │ ^^^^^^^^^
    2 │ 
  
  ℹ Unsafe fix: Use -= instead.
  
    1   │ - a·=·a·-·1;
      1 │ + a·-=·1;
    2 2 │

1
a = a * 1;

code-block.js:1:1 lint/style/useShorthandAssign  FIXABLE  ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ℹ Assignment (=) can be replaced with operator assignment *=.
  
  > 1 │ a = a * 1;
      │ ^^^^^^^^^
    2 │ 
  
  ℹ Unsafe fix: Use *= instead.
  
    1   │ - a·=·a·*·1;
      1 │ + a·*=·1;
    2 2 │

有效

¥Valid

1
a += 1;

1
a -= 1;

1
a *= 1;

useShorthandAssign

摘要

如何配置

描述

示例

无效

有效

相关链接