For my React Native app, I currently set the date like this:
new Date().getTime()
For my Swift App, I use:
Date().timeIntervalSince1970
Is there a JavaScript equivalent to Date().timeIntervalSince1970, or vice versa (as the data is stored in Firebase cloud storage)?
Due to the different formats being used, messages are not displaying in the correct order.
The function timeIntervalSince1970 according to the documentation represents the seconds elapsed since 1970.
In JavaScript, a similar function would be Date.getTime(), but this returns the time in milliseconds. To convert this to seconds, you need to divide the result by 1000.
new Date().getTime() / 1000
If you need to reverse this operation, remember to multiply the seconds by 1000 to get the time in milliseconds.
One way to get the number of seconds elapsed since January 1, 1970 00:00:00 UTC is by using the Date.now() method. You can achieve this by dividing the returned milliseconds value by 1000, as shown in the code snippet below:
const millis = Date.now();
const time = Math.floor(millis / 1000);
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