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},         ]我想實現把兩個數組a1和a2進行合并，存放到數組b里面。可以進行合并么。師傅說，要有一個映射對照，有一個對照關系，才能合并。因為我是前端，對數據庫的主鍵什么的不是很了解。