映射数组内的对象

Question

I'm trying to create an object with these two a and b, first one's header columns are corresponding to another object's keys. For Example:

a =[{  name: 'CreatedDateTime', header: 'Tarih' },
    {  name: 'Name', header: 'Adi' }]

b= [{ CreatedDateTime:"10.1.2021" },{Name:"Merve"}]

The output should be like this:

c=[{Tarih:"10.1.2021" , Adi:"Merve" }]

How can i do that?

Answer 1

You can reduce the a array to the object you want by

1. Iterating each entry and extracting the name and header properties
2. Using the header as the object key
3. Using the matching index from b (if it exists) and extracting the name property as the value

 const a = [{"name":"CreatedDateTime","header":"Tarih"},{"name":"Name","header":"Adi"}] const b = [{"CreatedDateTime":"10.1.2021"},{"Name":"Merve"}] const c = a.reduce((o, { header, name }, i) => ({ ...o, [ header ]: b[i]?.[name] // use optional-chaining in case it doesn't exist }), {}) console.log(c)

This produces an object. If you really need that to be a single-element array, just wrap it, ie

const cArray = [ c ] // no idea why

Answer 2

Phil provided a generalized solution already, here is a non-generalized solution maybe easier to understand the basics:

 var a = [{ name: 'CreatedDateTime', header: 'Tarih' },{ name: 'Name', header: 'Adi' }] var b = [{ CreatedDateTime:"10.1.2021" },{Name:"Merve"}] var c = {}; c[a[0].header] = b[0][a[0].name] c[a[1].header] = b[1][a[1].name] console.log("c: ", c)