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

To use the getDaysInYear function from the date-fns library in JavaScript, you first need to install and import the library in your project. You can do this by running the following command in your terminal:

npm install date-fns
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Once the library is installed, you can import the getDaysInYear function using the following line of code:

const { getDaysInYear } = require('date-fns');
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Alternatively, if you are using ES6 modules, you can import the function like this:

import { getDaysInYear } from 'date-fns';
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Now that you have imported the function, you can use it by passing a Date object to it. The function will return the number of days in the year of the given date. Here's an example:

const date = new Date('2022-01-01'); // January 1st, 2022
const daysInYear = getDaysInYear(date); // 365
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In this example, we create a Date object representing January 1st, 2022. We then pass this object to the getDaysInYear function, which returns the number of days in the year 2022 (which is 365).