Menene progressive enhancement?

Question

IT Interview Practice · Accepted Answer

**Progressive enhancement** shine dabarar gida daga tushe mai ikon (HTML semantic da ke aiki a ko'ina) sannan a'a *jera* CSS don gabatarwa da JavaScript don rikitarwa mafi yawa — don al'amarin tushe ke aiki ko da kuma jere na sama su kasa. ## Jera uku ```text 1. HTML → content + functionality (works with no CSS/JS) 2. CSS → presentation/layout (enhances appearance) 3. JS → interactivity (enhances behavior) ``` ## Misali na gaske: forom ```html ``` ```js // Layer 3: IF JS is available, enhance it into a live AJAX search form.addEventListener("submit", (e) => { e.preventDefault(); // upgrade to fetch — no reload fetchResults(form.q.value); }); ``` Idan JavaScript ya kasa lodewa (gida daɗo, kuskure, tsiyaye), forom **har yanzu ke aiki** ta hanyar shidar asali — mai amfani zai iya neman. JS kawai *yana haɓaka* shi. ## Progressive enhancement da graceful degradation - **Progressive enhancement** — fara daga tushe, gida *sama*. (Ƙasa-sama.) - **Graceful degradation** — fara daga sigar cikakke, tabbatar da shi *ya samu* kyau. (Sama-ƙasa.) Progressive enhancement gaba daya ƙarfi sosai saboda tushe an tabbata zai aiki. ## Me yasa ya zama muhimmi Yana samar da gida masu iko, da isa, da mai iko: abun cikin HTML (kyau ga SEO, karantawa-gida, da gida daɗo/tsohon), shafi ke amfani kafin/ba tare da JS (karfin amfani na sauri, ke aiki idan rubutu ya kasa), da haɓakawa shine kyauta maimakon kailakali. A cikin duniyar iri-iri na gida, sadarwa, da bugi-bugi, gida sama da tushe HTML da ke aiki — maimakon tsinkayi cewa JS koyaushe ke aiki — yana kiye shafi ba tare da daban-daban. Gida na baje-baje waje cikin kyakkyawar gabatarwa da "platform ta aiki jiya, hydration yana haɓaka."

Jera uku

Misali na gaske: forom

Progressive enhancement da graceful degradation

Me yasa ya zama muhimmi

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