Arrays 如何从包含对象数组的json中获取特定对象

我试图从以下json对象中筛选id=963。但是获取空数组作为输出。代码如下：

 var json ={"prizes"[
{"year":"2018",
 "category":"physics",
 "overallMotivation":"\u201cfor groundbreaking inventions in the field of laser physics\u201d",
 "laureates"[
 {"id":"960",
  "firstname":"Arthur",
  "surname":"Ashkin",
  "motivation":"\"for the optical tweezers and their application to biological systems\"","share":"2"},
{"id":"961",
 "firstname":"G\u00e9rard",
 "surname":"Mourou",
 "motivation":"\"for their method of generating high-intensity, ultra-short optical pulses\"",
 "share":"4"},
 {"id":"962",
  "firstname":"Donna",
  "surname":"Strickland",
  "motivation":"\"for their method of generating high-intensity, ultra-short optical pulses\"",
  "share":"4"}]},
  {"year":"2018",
   "category":"chemistry",
  "laureates":[
  {"id":"963",
   "firstname":"Frances H.",
   "surname":"Arnold",
   "motivation":"\"for the directed evolution of enzymes\"",
   "share":"2"},
  {"id":"964",
   "firstname":"George P.",
   "surname":"Smith",
   "motivation":"\"for the phage display of peptides and antibodies\"",
   "share":"4"},
  {"id":"965",
   "firstname":"Sir Gregory P.","surname":"Winter",
   "motivation":"\"for the phage display of peptides and antibodies\"",
   "share":"4"}]},
  {"year":"2018",
   "category":"medicine",
   "laureates":[
  {"id":"958",
   "firstname":"James P.",
   "surname":"Allison",
   "motivation":"\"for their discovery of cancer therapy by inhibition of negative immune regulation\"",
   "share":"2"},
  {"id":"959",
   "firstname":"Tasuku",
   "surname":"Honjo",
   "motivation":"\"for their discovery of cancer therapy by inhibition of negative immune regulation\"",
  "share":"2"}]}]};

var winners = json.prizes.map(holders=> holders.laureates)
var winner = winners.filter(item => item.id === 963)
console.log(winner);

此json包含数组中的对象数组。我试图得到一个特定的对象。但在控制台中获取空数组

[]

---

首先，您应该连接所有获奖者，然后找到您的项目：

var winners = this.json.prizes.reduce((aggr, holders) => (aggr.push(...holders.laureates), aggr), []);
var winner = winners.filter(item => item.id == '963');

var json={“奖品”：[
{“年份”：“2018年”，
“类别”：“物理学”，
“总体动机”：“\u201c激光物理领域的突破性发明\u201d”，
“获奖者”：[
{“id”：“960”，
“名字”：“亚瑟”，
“姓”：“阿什金”，
“动机”：“光镊及其在生物系统中的应用”，“共享”：“2”}，
{“id”：“961”，
“名字”：“G\u00e9rard”，
“姓氏”：“Mourou”，
“动机”：“他们产生高强度超短光脉冲的方法”，
“共享”：“4”}，
{“id”：“962”，
“名字”：“唐娜”，
“姓氏”：“斯特里克兰”，
“动机”：“他们产生高强度超短光脉冲的方法”，
“共享”：“4”}]}，
{“年份”：“2018年”，
“类别”：“化学”，
“获奖者”：[
{“id”：“963”，
“名字”：“弗朗西斯H.”，
“姓”：“阿诺德”，
“动机”：“酶的定向进化”，
“共享”：“2”}，
{“id”：“964”，
“名字”：“乔治P.”，
“姓氏”：“史密斯”，
“动机”：“用于肽和抗体的噬菌体展示”，
“共享”：“4”}，
{“id”：“965”，
“姓”：“格雷戈里爵士P.，“姓”：“温特”，
“动机”：“用于肽和抗体的噬菌体展示”，
“共享”：“4”}]}，
{“年份”：“2018年”，
“类别”：“药物”，
“获奖者”：[
{“id”：“958”，
“名字”：“James P.”，
“姓氏”：“埃里森”，
“动机”：“他们发现通过抑制负性免疫调节进行癌症治疗”，
“共享”：“2”}，
{“id”：“959”，
“名字”：“Tasuku”，
“姓”：“Honjo”，
“动机”：“他们发现通过抑制负性免疫调节进行癌症治疗”，
“共享”：“2”}]}]}；
var winners=json.prices.map（holders=>holders.laureates）
//var st=优胜者[1]
对于（var f=0；fid是字符串，因此请尝试item.id==963或item.id=='963'，我将使用find而不是filter…data.奖品。reduce（（acc，winners）=>（acc.push（…winners.laureates），acc），[]）。find（I=>I.id==='963'）
    var json ={"prizes":[
{"year":"2018",
 "category":"physics",
 "overallMotivation":"\u201cfor groundbreaking inventions in the field of laser physics\u201d",
 "laureates":[
 {"id":"960",
  "firstname":"Arthur",
  "surname":"Ashkin",
  "motivation":"\"for the optical tweezers and their application to biological systems\"","share":"2"},
{"id":"961",
 "firstname":"G\u00e9rard",
 "surname":"Mourou",
 "motivation":"\"for their method of generating high-intensity, ultra-short optical pulses\"",
 "share":"4"},
 {"id":"962",
  "firstname":"Donna",
  "surname":"Strickland",
  "motivation":"\"for their method of generating high-intensity, ultra-short optical pulses\"",
  "share":"4"}]},
  {"year":"2018",
   "category":"chemistry",
  "laureates":[
  {"id":"963",
   "firstname":"Frances H.",
   "surname":"Arnold",
   "motivation":"\"for the directed evolution of enzymes\"",
   "share":"2"},
  {"id":"964",
   "firstname":"George P.",
   "surname":"Smith",
   "motivation":"\"for the phage display of peptides and antibodies\"",
   "share":"4"},
  {"id":"965",
   "firstname":"Sir Gregory P.","surname":"Winter",
   "motivation":"\"for the phage display of peptides and antibodies\"",
   "share":"4"}]},
  {"year":"2018",
   "category":"medicine",
   "laureates":[
  {"id":"958",
   "firstname":"James P.",
   "surname":"Allison",
   "motivation":"\"for their discovery of cancer therapy by inhibition of negative immune regulation\"",
   "share":"2"},
  {"id":"959",
   "firstname":"Tasuku",
   "surname":"Honjo",
   "motivation":"\"for their discovery of cancer therapy by inhibition of negative immune regulation\"",
  "share":"2"}]}]};

var winners = json.prizes.map(holders=> holders.laureates)
//var st=winners[1]
for(var f=0;f<winners.length;f++)
{
for(var c=0;c<winners[f].length;c++)
{
 //console.log(winners[f][c].id=="963")
 if(winners[f][c].id=="963")
{
  var result=winners[f][c];
}
}
}
console.log(result)
//var winner = winners.find(item => item.id == "963")
//console.log(winner);