比较两个对象数组

我有两个这样的数组。第一个数组是customFields长度为 2

var customFields = [  
   {  
      "$$hashKey":"object:259",
      "fields":[  

      ],
      "id":0.84177744416334,
      "inputType":"number",
      "labelShown":"item",
      "type":"textBox",
      "value":"222222"
   },
   {  
      "$$hashKey":"object:260",
      "fields":[  
         "as",
         "dd",
         "asd"
      ],
      "id":0.51091342118417,
      "inputType":"",
      "labelShown":"labels",
      "type":"selectBox",
      "value":"dd"
   }
]

第二个是field长度为 3

var field = [  
   {  
      "fields":[  

      ],
      "id":0.84177744416334,
      "inputType":"number",
      "labelShown":"item",
      "type":"textBox"
   },
   {  
      "fields":[  
         "as",
         "dd",
         "asd"
      ],
      "id":0.51091342118417,
      "inputType":"",
      "labelShown":"labels",
      "type":"selectBox"
   },
   {  
      "fields":[  

      ],
      "id":0.32625015743856,
      "inputType":"text",
      "labelShown":"sample",
      "type":"textBox"
   }
] 

两个数组都是动态的，我需要通过以下方式比较这些数组id字段并将缺失的对象添加到customFields数组来自field大批。我怎样才能做到这一点而不需要 2 个 for 循环相互循环。什么是最有效的方法。谢谢 ！！！！

您可以使用reduce() and find()得到想要的结果。

var customFields = [{"$$hashKey":"object:259","fields":[],"id":0.84177744416334,"inputType":"number","labelShown":"item","type":"textBox","value":"222222"},{"$$hashKey":"object:260","fields":["as","dd","asd"],"id":0.51091342118417,"inputType":"","labelShown":"labels","type":"selectBox","value":"dd"}];
var field = [{"fields":[],"id":0.84177744416334,"inputType":"number","labelShown":"item","type":"textBox"},{"fields":["as","dd","asd"],"id":0.51091342118417,"inputType":"","labelShown":"labels","type":"selectBox"},{"fields":[],"id":0.32625015743856,"inputType":"text","labelShown":"sample","type":"textBox"}]

var result = field.reduce(function(r, e) {
  var f = customFields.find(el => e.id == el.id)
  r.push(f ? f : e)
  return r;
}, [])

console.log(result)