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array_merge.js
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array_merge.js
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module.exports = function array_merge() {
// discuss at: https://locutus.io/php/array_merge/
// original by: Brett Zamir (https://brett-zamir.me)
// bugfixed by: Nate
// bugfixed by: Brett Zamir (https://brett-zamir.me)
// input by: josh
// example 1: var $arr1 = {"color": "red", 0: 2, 1: 4}
// example 1: var $arr2 = {0: "a", 1: "b", "color": "green", "shape": "trapezoid", 2: 4}
// example 1: array_merge($arr1, $arr2)
// returns 1: {"color": "green", 0: 2, 1: 4, 2: "a", 3: "b", "shape": "trapezoid", 4: 4}
// example 2: var $arr1 = []
// example 2: var $arr2 = {1: "data"}
// example 2: array_merge($arr1, $arr2)
// returns 2: {0: "data"}
const args = Array.prototype.slice.call(arguments)
const argl = args.length
let arg
const retObj = {}
let k = ''
let argil = 0
let j = 0
let i = 0
let ct = 0
const toStr = Object.prototype.toString
let retArr = true
for (i = 0; i < argl; i++) {
if (toStr.call(args[i]) !== '[object Array]') {
retArr = false
break
}
}
if (retArr) {
retArr = []
for (i = 0; i < argl; i++) {
retArr = retArr.concat(args[i])
}
return retArr
}
for (i = 0, ct = 0; i < argl; i++) {
arg = args[i]
if (toStr.call(arg) === '[object Array]') {
for (j = 0, argil = arg.length; j < argil; j++) {
retObj[ct++] = arg[j]
}
} else {
for (k in arg) {
if (arg.hasOwnProperty(k)) {
if (parseInt(k, 10) + '' === k) {
retObj[ct++] = arg[k]
} else {
retObj[k] = arg[k]
}
}
}
}
}
return retObj
}