disallow Array constructors (no-array-constructor)

禁止使用 Array 构造函数

Use of the Array constructor to construct a new array is generally discouraged in favour of array literal notation because of the single-argument pitfall and because the Array global may be redefined. The exception is when the Array constructor is used to intentionally create sparse arrays of a specified size by giving the constructor a single numeric argument.

由于单参数的陷阱,和全局范围的 Array 可能被重定义,通常不允许使用 Array的构造函数来创建数组。唯一的例外是通过给构造函数传入指定的一个数值来创建稀疏数组。

Rule Details

This rule disallows Array constructors.

该规则禁止使用 Array 构造函数。

Examples of incorrect code for this rule:

错误 代码示例:

/*eslint no-array-constructor: "error"*/

Array(0, 1, 2)
/*eslint no-array-constructor: "error"*/

new Array(0, 1, 2)

Examples of correct code for this rule:

正确 代码示例:

/*eslint no-array-constructor: "error"*/

Array(500)
/*eslint no-array-constructor: "error"*/

new Array(someOtherArray.length)

When Not To Use It

This rule enforces a nearly universal stylistic concern. That being said, this rule may be disabled if the constructor style is preferred.

该规则强制一个几乎很普遍的风格问题。也就是说,如果构造函数的风格是首选的,可以禁用此规则。

Version

This rule was introduced in ESLint 0.4.0.

该规则在 ESLint 0.4.0 中被引入。

Resources


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