I just want to wrap a div with the slideshow class around every 3 divs with a class for search audio.
One error I got was that it said elem.parentElement is undefined...
So this part works well...
const audioBlocks = document.querySelectorAll('.search-audio');
const slider = document.querySelector('.slider');
const audioBlockArr = Array.from(audioBlocks);
function groupBlocks(arr, len) {
let groups = [],
i = 0,
n = arr.length;
while (i < n) {
groups.push(arr.slice(i, i += len));
}
return groups;
}
newArr = [...groupBlocks(audioBlockArr, 3)];
Here's the problem - wrapping a div around a new array of grouped elements.
let wrap = (array) => {
array.forEach((elem) => {
let div = document.createElement('div');
div.classList.add('slide');
div.innerHTML = '';
elem.parentElement.insertBefore(div, elem);
div.appendChild(elem);
});
}
wrap(newArr);
Full code:
const audioBlocks = document.querySelectorAll('.search-audio');
const slider = document.querySelector('.slider');
const audioBlockArr = Array.from(audioBlocks);
function groupBlocks(arr, len) {
let groups = [],
i = 0,
n = arr.length;
while (i < n) {
groups.push(arr.slice(i, i += len));
}
return groups;
}
newArr = [...groupBlocks(audioBlockArr, 3)];
let wrap = (array) => {
array.forEach((elem) => {
let div = document.createElement('div');
div.classList.add('slide');
div.innerHTML = '';
elem.parentElement.insertBefore(div, elem);
div.appendChild(elem);
});
}
wrap(newArr);
body {
font-family: system-ui;
background: #f06d06;
color: white;
text-align: center;
}
.search-audio {
height: 12rem;
width: 12rem;
background: rgb(255, 153, 0);
margin: .5rem;
display: inline-block;
}
.slide {
background-color: #555;
}
<body>
<div class="slider">
<div class="search-audio 1"></div>
<div class="search-audio 2"></div>
<div class="search-audio 3"></div>
<div class="search-audio 4"></div>
<div class="search-audio 5"></div>
<div class="search-audio 6"></div>
<div class="search-audio 7"></div>
<div class="search-audio 8"></div>
<div class="search-audio 9"></div>
<div class="search-audio 10"></div>
<div class="search-audio 11"></div>
<div class="search-audio 12"></div>
<div class="search-audio 13"></div>
<div class="search-audio 14"></div>
<div class="search-audio 15"></div>
<div class="search-audio 16"></div>
<div class="search-audio 17"></div>
<div class="search-audio 18"></div>
<div class="search-audio 19"></div>
<div class="search-audio 20"></div>
</div>
</body>
</html>
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I think you're overcomplicating things a bit, you can apply the style of
.search-audioto each class of.slideby using:nth-childa third div to use CSS.This code may be wrong, but is similar to:
.slide:nth-child(3n) { /* move styles here from .search-audo */ }Here are some links that may be helpful in learning how to use them:
The problem is that
elemis not a single element, it is an array of 3 elements created bygroupBlocks(). So there is noelem.parentElement.Use
elem[0].parentElementto get the common parent element of all elements. Then loop through them to append each element to a new div.I renamed
elemtogroupin the code below to more correctly match what it contains.const audioBlocks = document.querySelectorAll('.search-audio'); const slider = document.querySelector('.slider'); const audioBlockArr = Array.from(audioBlocks); function groupBlocks(arr, len) { let groups = [], i = 0, n = arr.length; while (i { array.forEach((group) => { let div = document.createElement('div'); div.classList.add('slide'); div.innerHTML = ''; group[0].parentElement.insertBefore(div, group[0]); group.forEach(elem => div.appendChild(elem)); }); } wrap(newArr);body { font-family: system-ui; background: #f06d06; color: white; text-align: center; } .search-audio { height: 12rem; width: 12rem; background: rgb(255, 153, 0); margin: .5rem; display: inline-block; } .slide { background-color: #555; }