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update code example in html reactivity

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Ayo Ayco 2024-05-15 20:52:23 +02:00
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_posts/2023-12-21-reactive-custom-elements-with-html-dataset.md
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@ -39,7 +39,7 @@ Let's consider the following code example (also [in CodePen →](https://code
class Counter extends HTMLElement { class Counter extends HTMLElement {
static observedAttributes = ["data-count"]; static observedAttributes = ["data-count"];
connectedCallback() { connectedCallback() {
this.dataset.count = 0; this.dataset.count = this.dataset.count ?? 0;
this.onclick = () => ++this.dataset.count; this.onclick = () => ++this.dataset.count;
} }
attributeChangedCallback(prop, oldValue, newValue) { attributeChangedCallback(prop, oldValue, newValue) {