将具有相同键的 JSON 对象合并在一起 [英] Merging JSON objects with same key together

问题描述

我需要将具有相同键的 JSON 对象合并为一个，以便它获得一个对象或数组(如果结果是对象或数组则无关紧要)，其中包含键和值的数组

I need to merge JSON objects with same key into one so that it gets an object or array(doesn't matter if result is an object or array) which holds the key and an array for the values

示例 JSON 对象:

example JSON object:

[{
    "meine_frage": "hier kommt die antwort",
    "ne_andere_frage": "ne andere antwort",
    "was_willst_du": "alles",
    "mehr_zur_auswahl": ["einiges", "vieles und", "g\u00e4r nix"]

}, {
    "meine_frage": "tom & jerry",
    "ne_andere_frage": "mickey maus",
    "was_willst_du": "oder",
    "mehr_zur_auswahl": ["manches", "einiges", "vieles und", "g\u00e4r nix"]

}, {
    "meine_frage": "dick und doof",
    "ne_andere_frage": "minnie muas",
    "was_willst_du": "nichts",
    "mehr_zur_auswahl": ["g\u00e4r nix"]

}]

结果应该是这样的:

[{
    "meine_frage": ["hier kommt die antwort", "tom & jerry", "dick und doof"],
    "ne_andere_frage": ["ne andere antwort", "mickey maus", "minnie muas"],
    "was_willst_du": ["alles", "oder"],
    "mehr_zur_auswahl": ["einiges", "vieles und", "g\u00e4r nix", "manches", "einiges", "vieles und", "g\u00e4r nix"]
}]

一些值已经是数组，而另一些不是，键是动态生成的，所以假设键名是未知的

some values are already arrays whereas others not, the keys are genterated dynamically so assume the the key name is unkown

我尝试用 $.each 和 for 循环迭代键/值但没有成功，也在网上搜索但找不到类似的，感谢任何帮助

i tried iterating over the key/values with $.each and for loops but without success, also searched the web but couldnt find similar, appreciate any help

推荐答案

您可以为此使用 reduce() 和 concat() 方法.

You can use reduce() and concat() methods for this.

const data = [{"meine_frage":"hier kommt die antwort","ne_andere_frage":"ne andere antwort","was_willst_du":"alles","mehr_zur_auswahl":["einiges","vieles und","gär nix"]},{"meine_frage":"tom & jerry","ne_andere_frage":"mickey maus","was_willst_du":"oder","mehr_zur_auswahl":["manches","einiges","vieles und","gär nix"]},{"meine_frage":"dick und doof","ne_andere_frage":"minnie muas","was_willst_du":"nichts","mehr_zur_auswahl":["gär nix"]}]

const result = data.reduce(function(r, e) {
  return Object.keys(e).forEach(function(k) {
    if(!r[k]) r[k] = [].concat(e[k])
    else r[k] = r[k].concat(e[k])
  }), r
}, {})

console.log(result)

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