Lesson 08 · 12 min
onMounted and loading
After it appears in the DOM — onMounted. Fetch there, or in a watch on the id.
12 minLesson 8 of 8Practice includedAsk AI on any point
onMounted(() => { … }) — the component is already in the document. DOM measurements and the initial load go here. onUnmounted clears a timer. A changing id from a prop needs watch, not just mount: otherwise switching the user on the same screen won't load the data.
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