useNumberNamespace

诊断类别：lint/style/useNumberNamespace

¥Diagnostic Category: lint/style/useNumberNamespace

JavaScript (and super languages)

自从：v1.5.0

¥Since: v1.5.0

来源：

¥Sources:

与以下相同：unicorn/prefer-number-properties

¥Same as: unicorn/prefer-number-properties

使用 Number 属性而不是全局属性。

¥Use the Number properties instead of global ones.

ES2015 将一些全局变量移入 Number 属性以保持一致性。

¥ES2015 moved some globals into the Number properties for consistency.

该规则不报告全局变量 isFinite 和 isNan，因为它们的行为与相应的 Number 的属性 Number.isFinite 和 Number.isNan 略有不同。你可以使用专用规则 noGlobalIsFinite 和 noGlobalIsNan 强制使用 Number.isFinite 和 Number.isNan。

¥The rule doesn’t report the globals isFinite and isNan because they have a slightly different behavior to their corresponding Number’s properties Number.isFinite and Number.isNan. You can use the dedicated rules noGlobalIsFinite and noGlobalIsNan to enforce the use of Number.isFinite and Number.isNan.

示例

¥Examples

无效

¥Invalid

parseInt("1"); // true

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

  ✖ Use Number.parseInt instead of the equivalent global.
  
  > 1 │ parseInt(“1”); // true
      │ ^^^^^^^^
    2 │ 
  
  ℹ ES2015 moved some globals into the Number namespace for consistency.
  
  ℹ Safe fix: Use Number.parseInt instead.
  
    1   │ - parseInt(“1”);·//·true
      1 │ + Number.parseInt(“1”);·//·true
    2 2 │

parseFloat("1.1"); // true

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

  ✖ Use Number.parseFloat instead of the equivalent global.
  
  > 1 │ parseFloat(“1.1”); // true
      │ ^^^^^^^^^^
    2 │ 
  
  ℹ ES2015 moved some globals into the Number namespace for consistency.
  
  ℹ Safe fix: Use Number.parseFloat instead.
  
    1   │ - parseFloat(“1.1”);·//·true
      1 │ + Number.parseFloat(“1.1”);·//·true
    2 2 │

NaN; // true

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

  ✖ Use Number.NaN instead of the equivalent global.
  
  > 1 │ NaN; // true
      │ ^^^
    2 │ 
  
  ℹ ES2015 moved some globals into the Number namespace for consistency.
  
  ℹ Safe fix: Use Number.NaN instead.
  
    1   │ - NaN;·//·true
      1 │ + Number.NaN;·//·true
    2 2 │

Infinity; // true

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

  ✖ Use Number.POSITIVE_INFINITY instead of the equivalent global.
  
  > 1 │ Infinity; // true
      │ ^^^^^^^^
    2 │ 
  
  ℹ ES2015 moved some globals into the Number namespace for consistency.
  
  ℹ Safe fix: Use Number.POSITIVE_INFINITY instead.
  
    1   │ - Infinity;·//·true
      1 │ + Number.POSITIVE_INFINITY;·//·true
    2 2 │

-Infinity; // true

code-block.js:1:2 lint/style/useNumberNamespace  FIXABLE  ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ✖ Use Number.NEGATIVE_INFINITY instead of the equivalent global.
  
  > 1 │ -Infinity; // true
      │  ^^^^^^^^
    2 │ 
  
  ℹ ES2015 moved some globals into the Number namespace for consistency.
  
  ℹ Safe fix: Use Number.NEGATIVE_INFINITY instead.
  
    1   │ - -Infinity;·//·true
      1 │ + Number.NEGATIVE_INFINITY;·//·true
    2 2 │

有效

¥Valid

Number.parseInt("1"); // false

Number.parseFloat("1.1"); // false

Number.NaN; // false

Number.POSITIVE_INFINITY; // false

Number.NEGATIVE_INFINITY; // false

useNumberNamespace

示例

无效

有效

相关链接