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Ayo 2023-12-21 19:39:48 +01:00
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_posts/2023-12-21-reactive-custom-elements-with-html-dataset.md
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@ -44,7 +44,7 @@ class Counter extends HTMLElement {
customElements.define("my-counter", Counter);
```
In this example we use the standard `dataset` that collects all attributes prefixed with `data-`. `HTMLElement.dataset` exposes them for reading and writing and, because they have attribute counterparts, they will trigger the `attributeChangedCallback()` when modified and if they are observed attributes we explicitly indicated via `static observedAttributes`.
In this example we use the standard `dataset` that collects all attributes prefixed with `data-`. The `dataset` property exposes them for reading and writing and, because they have attribute counterparts, they will trigger the `attributeChangedCallback()` when modified.
Hence, every time the user clicks the element, the program modifies the observed `data-count` attribute and the update to the UI via `textContent` is triggered.