/
array_merge_recursive.js
39 lines (36 loc) · 1.24 KB
/
array_merge_recursive.js
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module.exports = function array_merge_recursive(arr1, arr2) {
// discuss at: https://locutus.io/php/array_merge_recursive/
// original by: Subhasis Deb
// input by: Brett Zamir (https://brett-zamir.me)
// bugfixed by: Kevin van Zonneveld (https://kvz.io)
// example 1: var $arr1 = {'color': {'favorite': 'red'}, 0: 5}
// example 1: var $arr2 = {0: 10, 'color': {'favorite': 'green', 0: 'blue'}}
// example 1: array_merge_recursive($arr1, $arr2)
// returns 1: {'color': {'favorite': {0: 'red', 1: 'green'}, 0: 'blue'}, 1: 5, 1: 10}
// test: skip-1
const arrayMerge = require('../array/array_merge')
let idx = ''
if (
arr1 &&
Object.prototype.toString.call(arr1) === '[object Array]' &&
arr2 &&
Object.prototype.toString.call(arr2) === '[object Array]'
) {
for (idx in arr2) {
arr1.push(arr2[idx])
}
} else if (arr1 && arr1 instanceof Object && arr2 && arr2 instanceof Object) {
for (idx in arr2) {
if (idx in arr1) {
if (typeof arr1[idx] === 'object' && typeof arr2 === 'object') {
arr1[idx] = arrayMerge(arr1[idx], arr2[idx])
} else {
arr1[idx] = arr2[idx]
}
} else {
arr1[idx] = arr2[idx]
}
}
}
return arr1
}