Question 33887 in React native Question posted in
The official React Native documentation can be found here.

How do i get remaining seconds of future date in javascript – React native

So i have an API, which gives me date format like this 11/21/2022 19:00:00 what i need to do is i have to schedule notification for this datetime, but the problem is i am using react-native/expo which accepts the scheduling time in seconds.

How do i convert this datetime to seconds, i mean if today’s date is 11/15/2022 12:00:00 and the date on which the notification should be scheduled is 11/16/2022 12:00:00 which means the future date in 1 day ahead of todays date, and 1 day is equal to 86400 seconds, which means i have to trigger notification after 86400 seconds. So how do i get the remaining seconds of the upcoming date?

Tags:

3

Answers


  1. Chosen as BEST ANSWER
    0

    Solved using dayjs package

    const dayjs = require("dayjs")

const d1 = dayjs("2022-11-15 13:00")
const d2 = dayjs("2022-11-16 12:00")

const res = d1.diff(d2) / 1000 // ÷ by 1000 to get output in seconds

console.log(res)

  2. 0

    You can get the epoch time in js with the function + new Date, if you are passing any date value, to new Date(dateValue), please make sure to stringify.

    + new Date

    To get the diff b/w these two dates in seconds,

    const initialDate = '11/15/2022 12:00:00'
const futureDate = '11/16/2022 12:00:00'
const diffInSeconds = (+ new Date(futureDate) - + new Date(initialDate)) / 1000

    ps: epoch time is in milliseconds, hence dividing by 1000.

    Login or Signup to reply.
  3. 0

    Use .getTime()

    • function Date.prototype.getTime() returns number of milliseconds since start of epoch (1/1/1970)
    • get the number of milliseconds and divide it 1000 to seconds
    • subtract (round) and you have the difference

    according to Date.parse() is only ISO 8601 format of ECMA262 string supported, so use:

    • new Date("2022-11-16T12:00:00Z")
    • or new Date(2022,10,16,12)
    • rather not n̶e̶w̶ ̶D̶a̶t̶e̶(̶"̶1̶1̶/̶2̶1̶/̶2̶0̶2̶2̶ ̶1̶9̶:̶0̶0̶:̶0̶0̶"̶)̶ that can lead to unexpected behaviour
    const secondsInTheFuture = new Date("2022-11-16T12:00:00Z").getTime() / 1000;
const secondsNow = new Date().getTime() / 1000;
const difference = Math.round(secondsInTheFuture - secondsNow);

console.log({ secondsInTheFuture, secondsNow, difference });
    Login or Signup to reply.
Please signup or login to give your own answer.

Back To Top
Search