javascript - 如何合并包含对象的数组？

Question

我有两个以上的数组，其中的对象具有一些相似的属性， 我想将所有数组合并为一个数组并按以下方式对主题进行排序:

array = [ 
 [ { "name" : "Jack", count: 10 }, { "name": "Fred", "count": 20 } ],
  [ { "name": "Jack", count: 3 }, { "name": "Sara", "count": 10 } ]
]

merged_array = [
  { "name": "Fred", "count": 20 },
  { "name": "Jack", "count": 13 },
  { "name": "Sara", "count": 10 }
]

Answer 1

array
 .reduce(function(result, arrayItem) {
   result = result || [];

   // sort also can be implemented here
   // by using `Insertion sort` algorithm or anyone else

   return result.concat(arrayItem);
 })
 .sort(function(a,b) { return a.count < b.count; })