js如何判断a数组的value和b数组的key是否相同从而组成新的数组?

Question

a数组：
[{id:1,key:'key1',value:'ggg'},{id:2,key:'key2',value:'cccc'}]
b数组
[{id:3,key1:'sdf'},{id:4,key2:'sdfdff'}]

期望
[{id:3,key1:'sdf',key:'key1',value:'ggg'},{id:4,key2:'sdfdff',key:'key2',value:'cccc'}]

Answer 1

var a = [{id:1,key:'key1',value:'ggg'},{id:2,key:'key2',value:'cccc'}]
var b = [{id:3,key1:'sdf'},{id:4,key2:'sdfdff'}]
function getData(a, b) {
    var list = b.map(item => {
        var obj = a.find(i => Object.keys(item).includes(i.key)) || {}
        return {...obj, ...item}        
    })
    return list
}

var c = getData(a, b)
console.log(c)