How to loop through array of objects and replace value es6

Question

I have an array of objects

const array =[{ "id": 1, "time": "2021-09-22T05:36:22.484Z" }, { "id": 2, "time": "2021-10-22T03:25:26.484Z" }]

I want to replace all the time values after converting to a timezone.

I am able to convert to timezones using

moment.tz("time","America/Toronto").format("YYYY-MM-DD HH:mm:ss)

but not sure how to loop through to replace the time value of every object.

So ideally, I would have something like:

const array =[{ "id": 1, "time": "2021-09-22 15:00" }, { "id": 2, "time": "2021-10-22T 12:00" }]

array.map(({ time, ...args }) => ({ time: moment(...), ...args })) — deceze
– deceze ♦, Commented Sep 22, 2021 at 6:55

Marco · Accepted Answer · 2021-09-22 07:00:29Z

Based on your data, you could simple use forEach and manipulate the time property as per your needs.

const array =[ { "id": 1, "time": "2021-09-22T05:36:22.484Z" }, { "id": 2, "time": "2021-10-22T03:25:26.484Z" }, ] array.forEach(x => { x.time = moment(x.time).utcOffset(90).format("YYYY-MM-DD HH:mm:ss") })

axtck · Accepted Answer · 2021-09-22 07:12:02Z

You could use map() to loop over the array and create a new array with the updated data.

const array = [{ "id": 1, "time": "2021-09-22T05:36:22.484Z" }, { "id": 2, "time": "2021-10-22T03:25:26.484Z" }] const result = array.map(({id, time}) => { return { id, time: moment(time).utcOffset(90).format("YYYY-MM-DD HH:mm:ss") } });

Satish0302 · Accepted Answer · 2021-09-22 06:58:03Z

0

array=array.map(ar=>{ ar.time= convertedtimezone //convert ar.time into timezone and assign it to ar.time return ar )

answered Sep 22, 2021 at 6:58

Satish0302

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4 Comments

deceze Over a year ago

If you're modifying the original object, you should use a forEach instead of a map…

Satish0302 Over a year ago

okay Thanks got it, can you tell me why

deceze Over a year ago

'Cause it's unnecessary to create a new array here, if the change is reflected in the original array anyway.

Marco Over a year ago

forEach manipulates the current object. Map on the other hand returns a new object without mutating the current object iterated on.

Shabari nath k · Accepted Answer · 2021-09-22 16:18:12Z

try this

[{ "id": 1, "time": "2021-09-22 15:00" }, {"id": 2,"time": "2021-10-22T 12:00" }].map(ele=>{return {...ele,time:moment.tz(ele.time,"America/Toronto").format("YYYY-MM-DD HH:mm:ss)}})

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