关于数组的合并

Question

       var a1=[             {name:"a",value:11},             {name:"b",value:22},             {name:"c",value:33},             {name:"d",value:44},         ]         var a2=[             {name:"a",value:111},             {name:"b",value:222},             {name:"c",value:333},             {name:"d",value:444},         ]         var b = [             {name:"a",value:11},             {name:"b",value:22},             {name:"c",value:333},             {name:"d",value:44},         ]我想实现把两个数组a1和a2进行合并，存放到数组b里面。可以进行合并么。师傅说，要有一个映射对照，有一个对照关系，才能合并。因为我是前端，对数据库的主键什么的不是很了解。

Answer 1

Object.assgin 可以解决问题，问题是你想保留哪一个里面的值