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Ich möchte nur alle 3 Divs ein Div mit einer Diashow-Klasse mit einer Klasse für die Audiosuche einschließen.
Ein Fehler, den ich bekam, war, dass elem.parentElement undefiniert war...
Dieser Teil funktioniert also großartig...
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)];
Hier liegt das Problem: Ein Div um ein neues Array gruppierter Elemente wickeln.
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);
Vollständiger 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>
P粉4890817322024-04-03 12:01:37
我认为你有点过于复杂了,可以通过使用 :nth-child
将 .search-audio
的样式应用到 .slide
类的每个第三个 div 来使用 CSS。< /p>
这段代码可能是错误的,但类似于:
.slide:nth-child(3n) { /* move styles here from .search-audo */ }
以下是一些可能有助于学习如何使用它们的链接:
P粉0128759272024-04-03 09:47:30
问题是 elem
不是单个元素,它是由 groupBlocks()
创建的 3 个元素的数组。所以没有 elem.parentElement
。
使用 elem[0].parentElement
获取所有元素的公共父元素。然后循环它们以将每个元素附加到新的 div 中。
我在下面的代码中将 elem
重命名为 group
,以更正确地匹配它包含的内容。
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((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; }