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"*/

/*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.



This rule was introduced in ESLint 0.4.0.

该规则在 ESLint 0.4.0 中被引入。