javascript - Lodash检查数组是否是对象数组？

Question

我找不到任何可以区分普通(例如整数)数组和对象数组的 Lodash 方法，因为 JavaScript 将对象视为数组。

就像两者都会返回true

console.log(_.isArray([1,2,3])); // true
console.log(_.isArray([{"name":1}])); // true

Answer 1

您可以使用_.every , _.some , 和 _.isObject区分基元数组、对象数组和同时包含基元和对象的数组。

基本语法

// Is every array element an object?
_.every(array, _.isObject)

// Is any array element an object?
_.some(array, _.isObject)

// Is the element at index `i` an object?
_.isObject(array[i])

更多示例

var primitives = [1, 2, 3]
var objects = [{name: 1}, {name: 2}]
var mixed = [{name: 1}, 3]

// Is every array element an object?
console.log( _.every(primitives, _.isObject) ) //=> false
console.log( _.every(objects,    _.isObject) ) //=> true
console.log( _.every(mixed,      _.isObject) ) //=> false

// Is any array element an object?
console.log( _.some(primitives, _.isObject) ) //=> false
console.log( _.some(objects,    _.isObject) ) //=> true
console.log( _.some(mixed,      _.isObject) ) //=> true

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