Kapan sampeyan bakal nggunakake fungsi render utawa JSX tinimbang template?

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Vue template dikompilasi dadi **fungsi render** sing bali virtual DOM. Biasane sampeyan nulis template, nanging sampeyan bisa nulis fungsi render (utawa JSX) langsung nalika sampeyan butuh **kekuatan JavaScript lengkap** kanggo ngasilake UI kanthi programatik. ## Fungsi render ```js import { h } from "vue"; // h = hyperscript: creates a virtual DOM node export default { props: ["level"], setup(props, { slots }) { // dynamically choose the tag — hard to express in a template return () => h(`h${props.level}`, slots.default()); // → renders an

}, }; ``` `h(tag, props, children)` mbangun vnodes kanthi imperatif. Kene tingkat heading dihitung nalika runtime kanggo milih `h1`–`h6` — awkward karo sintaks template. ## JSX (karo plugin Vue JSX) ```jsx export default { props: ["items"], setup(props) { return () => (
{props.items.map((item) => item.visible ?
{item.name}
: null )}
); }, }; ``` JSX ngidini sampeyan nggunakake plain JS (`.map`, kondisional, variabel) kanggo mbangun pohon — familiar kanggo pengembang React lan luwih fleksibel kanggo struktur sing sangat dinamis. ## Kapan fungsi render / JSX patut digunakake ```text ✓ Programmatic structure: a tag/component decided at runtime (dynamic headings, schema-driven UI) ✓ Highly conditional or recursive rendering hard to express with v-if/v-for ✓ Building reusable component libraries / higher-order components ✓ Rendering based on complex JS logic where template directives feel clumsy ``` ## Kapan tetep nggunakake template (standar) ```text ✓ Almost all app UI — templates are more readable, optimized by the compiler, and benefit from compile-time hints (static hoisting, patch flags) for performance ✓ Better tooling: IDE highlighting, type-checking, easier for the whole team ``` Ngemotengan, template compiler nambah optimasi performa (iku ngerti apa sing statis vis dinamis) sing fungsi render sing ditulis tangan ora entuk kanthi otomatis. ## Mengapa iki penting Template minangka standar sing tengen — madumuk, friendly karo tooling, lan dioptimasi compiler. Nanging fungsi render/JSX minangka lumirah nalika UI kudu dibuat kanthi programatik (tag dinamis, pohon rekursif, komponen library) nalika sintaks template dadi ribet. Menungsa loro-lorone ana — lan template luwih disenengi kanggo kode app sing lumrah dene fungsi render cocok kanggo skenario dinamis/library — ngidini sampeyan milih alat sing tengen tanpa meksa pendekatan siji-sijine ing mana-mana.