Adding content to an Array using forEach and updating innerHTML - A step-by-step guide

Question

Adding content to an Array using forEach and updating innerHTML - A step-by-step guide

I'm curious about adding data content inside an array to innerHTML using the forEach method.

For some reason, I can't get it to show up. Is it even possible? I'm dealing with dynamic data, so I need to loop through it and display it using innerHTML.

const showPosts = (data, value) => {
    const btnDiscover = document.querySelector('[data-show="discover"]');

    const slides = data.add_post_slides;

    const Posts = () => {
        return slides.length > 0 && 
            slides
                .map((el) => {
                    return <h2>123</h2>;
                })
                .join('');
    };

    // console.log(Posts());

    btnDiscover.addEventListener('click', (e) => {
        e.preventDefault();
        body.classList.add('toggle-legend', 'no-scroll');

        console.log('Discover clicked');
        console.log(slides);

        theContent = `
        <div class="modal">
            <div class="modal__body">
                <a href="#" id="close"><span class="modal__close"></span></a>

                ${Posts()}
            </div>
        </div>
        `;

        timelineModal.innerHTML = theContent;

        onModalClose();
    });
};

Any tips on how to achieve this?

javascript

Answer 1

Answer №1

One approach is to select an element using the getElementById method and then write a function to add data to the inner HTML of that element. You can try something like the example below:

var fruits = ["apple", "orange", "cherry"];
fruits.forEach(displayFruit);

function displayFruit(item, index) {
  document.getElementById("demo").innerHTML += index + ":" + item + "<br>";
}

Answer 2

One approach is to select an element using the getElementById method and then write a function to add data to the inner HTML of that element. You can try something like the example below:

var fruits = ["apple", "orange", "cherry"];
fruits.forEach(displayFruit);

function displayFruit(item, index) {
  document.getElementById("demo").innerHTML += index + ":" + item + "<br>";
}

Answer 3

Answer №2

Instead of using forEach, consider utilizing Array.map or declaring and initializing array variables to push elements into.

const newSlides = slides.map((el) => el)

Alternatively, you can also use:

const elements = [];
slides.forEach((el) => elements.push(el));

// Make sure to add a return statement in your arrow function as it currently does not return an element.
const Posts = () => {
    return slides.length > 0 &&
        slides
            .map((el) => {
                return <h2>123</h2>;
            })
            .join('');
};

Answer 4

Instead of using forEach, consider utilizing Array.map or declaring and initializing array variables to push elements into.

const newSlides = slides.map((el) => el)

Alternatively, you can also use:

const elements = [];
slides.forEach((el) => elements.push(el));

// Make sure to add a return statement in your arrow function as it currently does not return an element.
const Posts = () => {
    return slides.length > 0 &&
        slides
            .map((el) => {
                return <h2>123</h2>;
            })
            .join('');
};

Adding content to an Array using forEach and updating innerHTML - A step-by-step guide

Answer №1

Answer №2

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