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

To use the differenceInMilliseconds function from the date-fns library in JavaScript, you need to follow these simple steps:

1. Install the date-fns library by running the following command in your terminal:

npm install date-fns
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2. Import the differenceInMilliseconds function into your file:

index.tsx
import { differenceInMilliseconds } from 'date-fns';
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3. Pass in two date objects as arguments to the function, and it will return the difference in milliseconds between the two dates:

index.tsx
const start = new Date('2021-10-01T00:00:00.000Z');
const end = new Date('2021-10-01T00:01:30.000Z');

const diffInMs = differenceInMilliseconds(end, start);

console.log(diffInMs); // Output: 90000
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In the example above, the differenceInMilliseconds function calculates the difference between the start and end date objects, which is 90 seconds or 90,000 milliseconds.