how to use the setmilliseconds function from date-fns in javascript

The setMilliseconds function from date-fns can be used to set the milliseconds of a given date object in JavaScript. Here's an example:

index.tsx
const { setMilliseconds } = require('date-fns');

const date = new Date();
const milliseconds = 500;

const newDate = setMilliseconds(date, milliseconds);

console.log(date); // current date object
console.log(newDate); // new date object with milliseconds set to 500
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In this example, the setMilliseconds function is imported from date-fns. Then a new date object is created with the current date and time. A milliseconds value of 500 is specified. The setMilliseconds function is called with these two arguments, returning a new date object with the milliseconds set to 500.

The setMilliseconds function can also be used with a Unix timestamp:

index.tsx
const { setMilliseconds } = require('date-fns');

const timestamp = 1627616421390;
const milliseconds = 500;

const newTimestamp = setMilliseconds(timestamp, milliseconds);

console.log(timestamp); // original timestamp
console.log(newTimestamp); // new timestamp with milliseconds set to 500
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In this example, the setMilliseconds function is called with a Unix timestamp as the first argument, and a milliseconds value of 500 as the second argument. The function returns a new Unix timestamp with the milliseconds set to 500.