CODEWITHSUNDEEP
javascriptobject
Ahmed Brahimi
Ahmed Brahimi

Reputation: 75

from an array to object with costume keys while converting the date

I am trying to convert that kind of array to an object while formating the date to be able to use it with a chart.

Here is a snippet of what I did so far 

arr=[1524314460000,0.067872,0.067876,0.067876,0.06785,0.41500986]
var obj = {...arr}
const newKeys = {0: new Date("time"), 1: "open" , 2:"low",3:"high",4:"close",5:"volume" };
function renameKeys(obj, newKeys) {
  const keyValues = Object.keys(obj).map(key => {
    const newKey = newKeys[key] || key;
    return { [newKey]: obj[key] };
  });
  return Object.assign({}, ...keyValues);
}
const renamedObj = renameKeys(obj, newKeys);
console.log(renamedObj)

As you can see I able to convert it to an object but I cant use new Date() to convert the time , Any idea on how to approach the task as you can see I am getting invalid date.

Thank you

Upvotes: 1

Views: 47

Answers (3)

Slai
Slai

Reputation: 22866

Seems like just using the array indexes would be enough:

var arr = [1524314460000, 0.067872, 0.067876, 0.067876, 0.06785, 0.41500986]

var obj = {
  time: new Date(arr[0]),
  open: arr[1],
  low: arr[2],
  high: arr[3],
  close: arr[4],
  volume: arr[5]
}

console.log(obj)

Upvotes: 1

Narendra Jadhav
Narendra Jadhav

Reputation: 10262

You can also directly use your Array to convert into object using reduce() or map to get the required result.

DEMO

const arr = [1524314460000, 0.067872, 0.067876, 0.067876, 0.06785, 0.41500986],
 newKeys = {
  0: 'time',
  1: "open",
  2: "low",
  3: "high",
  4: "close",
  5: "volume"
};

function renameKeys(arr, newKeys) {
 return arr.reduce((r,v,i)=>{
	i = newKeys[i];
	r[i]= i == 'time'? new Date(v):v;
	return r;
  },{});
}
console.log(renameKeys(arr, newKeys))
.as-console-wrapper {  max-height: 100% !important;  top: 0;}

Upvotes: 1

Ankit Agarwal
Ankit Agarwal

Reputation: 30739

Remove new Date() from newKeys as you need date in the value of time key. Simply add a condition in the map that will check if the property is time or not. If it is, change it to date with new Date(obj[key])

arr=[1524314460000,0.067872,0.067876,0.067876,0.06785,0.41500986]
var obj = {...arr}
const newKeys = {0: "time", 1: "open" , 2:"low",3:"high",4:"close",5:"volume" };
function renameKeys(obj, newKeys) {
  const keyValues = Object.keys(obj).map(key => {
    if(newKeys[key] === 'time'){
      obj[key] = new Date(obj[key]);
    }
    const newKey = newKeys[key] || key;
    return { [newKey]: obj[key] };
  });
  return Object.assign({}, ...keyValues);
}
const renamedObj = renameKeys(obj, newKeys);
console.log(renamedObj)

Upvotes: 1

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