[研究]HTML 的 details 和 summary 顯示展開收合(手風琴(Accordion)、折疊(Collapse))效果
2022-05-08
環境:Visual Studio 2022 + ASP.NET + WebForm + Web Application + C#
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H2.html
<details> <summary>title 1</summary> <p>content 1</p> </details> <details> <summary>title 2</summary> <p>content 2</p> </details> <details> <summary>title 3</summary> <p>content 3</p> </details> |
結果
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如果希望同一時間只會展開一個,就需要靠 JavaScript 幫忙。
H3.html
<details class="details"> <summary>title 1</summary> <p>content 1</p> </details> <details class="details"> <summary>title 2</summary> <p>content 2</p> </details> <details class="details"> <summary>title 3</summary> <p>content 3</p> </details> <script> var details = Array.from(document.querySelectorAll('.details')); details.forEach((detail) => { detail.addEventListener('click', (e) => { var active = details.find(d => d.open); if (!e.currentTarget.open && active) { active.open = false; } }); }); </script> |
H4.html
<details class="detailsOpen"> <summary>title 1</summary> <p>content 1</p> </details> <details class="detailsOpen"> <summary>title 2</summary> <p>content 2</p> </details> <details class="detailsOpen"> <summary>title 3</summary> <p>content 3</p> </details> <script> var detailItems = Array.from(document.querySelectorAll('.detailsOpen')); detailItems.forEach((detailItem) => { detailItem.addEventListener('click', (e) => { var active = detailItems.find(d => d.open); if (!e.currentTarget.open && active) { active.open = false; } }); }); </script> |
(完)
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