使用 JavaScript (React) 将 Unix 日期和时间转换为本地时间

Question

I'm trying to convert unix timestamp to local date in a react project. Below is the function that I'm using:

 function convertDate(unixDate) { const d = new Date(unixDate * 1000); const day = d.toLocaleString(d.getDate()) return(day); }

The date I'm getting is not acurate. For example is we run convertDate(1657745369979.82) we should get the date '07/13/2022 8:49:29 PM'. However the date that I'm actually getting is '11/10/54501, 8:59:39 AM'

Answer 1

Why are you multiplying by 1000 ? This works just fine

new Date(1657745369979.82).toLocaleString() => '14/07/2022, 02:19:29'

which is the same as

Convert epoch to human-readable date and vice versa
1657745369979.82
 Timestamp to Human date  [batch convert]
Supports Unix timestamps in seconds, milliseconds, microseconds and nanoseconds.
Assuming that this timestamp is in milliseconds:
GMT: Wednesday, July 13, 2022 8:49:29.979 PM
Your time zone: Thursday, July 14, 2022 2:19:29.979 AM GMT+05:30
Relative: A day ago
 

from https://www.epochconverter.com/

If there's more that you want, this old thread should also help Convert a Unix timestamp to time in JavaScript

Answer 2

It looks like you do not need to multiply the timestamp by 1000.

Unix timestamps are often of this length: 1657831769, which would need to be multiplied by 1000 ( https://www.epochconverter.com/ is useful for testing conversions).

const unixDate = 1657745369979.82;
const d = new Date(unixDate);
console.log(d.toISOString());

Output: 2022-07-13T20:49:29.979Z