create a object from array using javascript

Question

I have two list of arrays with country code and currencies in order, but I need to know how to combine and form a object in the following format.

var cn =["AL","DZ","AS","AD","AO","AI","AG","AR","AM","AW","AU"];
var ccy = ["ALL","DZD","USD","EUR","AOA","XCD","XCD","ARS","AMD","AWG","AUD"];

Expected Output:

country:[
{
  "code": "AL",
  "currency": ["ALL"]
},
{
  "code": "DZ",
  "currency": ["DZD"]
}...
...
{
  "code": "AU",
  "currency": ["AUD"]
}
]

Answer 1

You can use map and use index to access corresponding value from second array

var cn =["AL","DZ","AS","AD","AO","AI","AG","AR","AM","AW","AU"];
var ccy = ["ALL","DZD","USD","EUR","AOA","XCD","XCD","ARS","AMD","AWG","AUD"];

let final = cn.map((code,index)=>{
  let currency = ccy[index]
  return {code, currency: [currency]}
})

console.log(final)

Answer 2

You just need to map over one of the two arrays, and use the current index to retrieve the corresponding value in the other array. During each iteration, return the object you want to create:

cc.map((code, index) => ({ code: code, currency: ccy[index]}));

Answer 3

One approach might be to iterate the code array using a lambda with an index, then push each JSON object in each iteration.

var cn =["AL","DZ","AS","AD","AO","AI","AG","AR","AM","AW","AU"];
var ccy = ["ALL","DZD","USD","EUR","AOA","XCD","XCD","ARS","AMD","AWG","AUD"];
var country = [];

cn.forEach(function (value, i) {
    country.push({code: value, currency: ccy[i]});
});

console.log(country);

Answer 4

var cn =["AL","DZ","AS","AD","AO","AI","AG","AR","AM","AW","AU"];
var ccy = ["ALL","DZD","USD","EUR","AOA","XCD","XCD","ARS","AMD","AWG","AUD"];
var country = [];
for (let i = 0; i < cn.length; i++) {
    country.push({ code: cn[i], currency: ccy[i] });    
}

could do the work

Answer 5

You could use a simple .map() for this:

var cn =["AL","DZ","AS","AD","AO","AI","AG","AR","AM","AW","AU"];
var ccy = ["ALL","DZD","USD","EUR","AOA","XCD","XCD","ARS","AMD","AWG","AUD"];
var result = cn.map((code, idx) => ({ code, cn: [ccy[idx]]}));

console.log(result);