CSSだけでcheckboxのチェック数をカウントする | かちびと.net
Result content: counter;を使ってチェック数をカウントする、というもの JSによるもののように応用は効きませんが、数えるだけなら css .languages {/*リセット*/ counter-reset: characters; } input:checked {/*チェックされたらカウント*/ counter-increment: characters; } .total:after {/*疑似要素で任意の場所にカウント結果を表示*/ content: counter(characters)"個の項目をチェックしています"; } html <div class="languages"> <div class="input-wrapper"> <input id="foo" type="checkbox"><label for="foo">foo</label>
Using CSS Counters
The CSS counters are variables which we can increment or decrement and display in our HTML. Using them, we can achieve iterations as we do in a programming language. We can create automatically ordered list in a new, creative way. Although the basic concept is similar to the <ol> element, the result differs. In this way, we can set up an order in every way in our markup. It is a less known feature
Understanding CSS Counters and Their Use Cases — SitePoint
There are certain CSS features that we probably don’t use very often. I think CSS counters fall into that category for most of us, and more than likely for two reasons: They don’t seem to have many use cases. The code to write them is a bit complex. I recently saw a practical use case for counters, so I thought I would give a brief crash course in how counters are written and share that use case h
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