Menene burin ``?

Question

Menene burin `<!DOCTYPE html>`?

Accepted Answer

`` shine layin farko na horon HTML. Ya gaya wa browser na bayyana a cikin **halin standard** maimakon **halin quirks** (wani tsohon halin daidaitawa ga kurakurai da ke tai wa barayi na 1990s). ```html ... ``` ## Halin standard da halin quirks Ba tare da doctype, barawaye suka koma wa **halin quirks**, wanda ke canja jiyya a hanya mai mamaki — mafi sannu **box model**: ```text Quirks mode: width includes padding + border (old IE box model) Standards mode: width is the content box (CSS spec) — predictable ``` Wasu quirks sun haɗa da samun dabam-daban na jajjakarwa na line-height a sassan tebur, shigar bayanan hotuna, da sassan CSS. Waɗannan rashin daidai na aiki sun sa CSS da aka rubuta da kulawo ya danganta a sabani, saboda haka kusan koyaushe kuna son halin standard. ## Me yasa ya yi qarai har yanzu A cikin HTML4/XHTML doctype ya kasance babbar URL ta nuni wa DTD (Mahimman Niyya na Nau'i): ```html ``` HTML5 ya saukar da shi zuwa `` kawai — ba shi turi wa DTD ba; ito ne kawai alamar canji wanda browser ya kanta. ## Me yasa ya zama muhimmi Ma kamata a haɗa `` a matsayin layin farko. Ya zama hangon layi ɗaya cewa shafin ku yana amfani da sura na bayyanwa na zamani da daidai da kull CSS karatun da framework suka zace — barin shi ya sa kaishin tabayi wanda ake taɓawa, da wahala a duba.