How to understand what needs to be done here?

[pinkod02]

Use destructuring assignment within the argument to the function half to send only max and min inside the function.

const stats = {
  max: 56.78,
  standard_deviation: 4.34,
  median: 34.54,
  mode: 23.87,
  min: -0.75,
  average: 35.85
};

// Only change code below this line

const half = () => stats.max + stats.min / 2.0; 
// Only change code above this line

What needs to be done here? From the example it is not clear why this destructuring is needed, what it does, I have never seen this in example projects, you will never understand them on the site itself.

[Pepster64]

An object like stats not only benefits grouping related data but also enhances code readability, maintainability, reusability, and scalability.

A little better way → const half = () => (stats.max + stats.min) / 2.0;

[pinkod02]

When they tell me that this improves the readability of the code, it gives me nothing, I didn’t understand it and still don’t understand it

[Pepster64]

An example if you had a database it would be tiresome to assign all those variable every time a the data is read in.

An example -

        this.database_data = {
            'category': 'images',
            'current_page': this.current_page,
            'per_page': this.per_page,
            'total_count': 0,
            'offset': this.offset
        };

data being read in →

    // Update the UI with the received pagination data
    async paginationUISuccess(parsedData) {
        this.resetLinks();

        this.database_data.offset = await parsedData.offset;
        this.total_pages = Math.ceil(this.database_data.total_count / this.database_data.per_page);

        /* Create the Display Links and add an event listener */
        this.pages = [{}];
        /*
         * Creating the array of page object(s)
         */
        for (let x = 0; x < this.total_pages; x++) {
            this.pages[x] = {page: x + 1};
        }

        this.pages.forEach(link_page => {
            const links = document.createElement('div');
            links.className = 'links';
            this.sidebar.appendChild(links);
            /*
             * Add event listener for the links
             */
            links.addEventListener('click', () => {
                this.database_data.current_page = link_page.page;
                this.createRequest('portfolioPagination.php', this.paginationUISuccess, this.paginationUIError);
            });

            const pageText = document.createElement('p');
            pageText.className = 'linkStyle';
            pageText.id = 'page_' + link_page.page;
            pageText.textContent = link_page.page;
            links.appendChild(pageText);
            if (this.database_data.current_page === link_page.page) {
                links.style.backgroundColor = "#00b28d";
            }
        })

        await this.createImageRequest('portfolioGetImages.php', this.categoryUISuccess, this.categoryUIError);
    }

[pinkod02]

I will never understand your code, what you wrote there))

[kicken]

There is a whole page on MDN that goes into detail on Destructuring assignments. In essence, it’s a way to extract specific properties from an object. For example:

const stats = {
  max: 56.78,
  standard_deviation: 4.34,
  median: 34.54,
  mode: 23.87,
  min: -0.75,
  average: 35.85
};
const {min, max} = stats;

Looking at the MDN page shows you can apparently define function parameters this way also, which is something I was unaware of and rarely see.

const half = ({max, min}) => max + min / 2.0; 
console.log(half(stats));