Function: isArray()

function isArray(value): value is any[];

Checks if a value is an array. 检查值是否为数组。

This function uses the native Array.isArray when available, falling back to a type check for older environments. 此函数在可用时使用原生Array.isArray，在较旧环境中回退到类型检查。

Parameters

Parameter	Type	Description
value	any	The value to check / 要检查的值

Returns

value is any[]

True if the value is an array / 如果值是数组则返回true

Example

isArray([1, 2, 3]) // => true
isArray([]) // => true
isArray(new Array(5)) // => true
isArray('abc') // => false
isArray({ 0: 'a', 1: 'b', length: 2 }) // => false (array-like but not array)
isArray(null) // => false
isArray(undefined) // => false
isArray(arguments) // => false (arguments object is not an array)

Since

1.0.0