Video: Dab tsi yog DTD hauv HTML?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Ib hom ntawv txhais lus ( DTD ) yog ib txheej ntawm cov lus tshaj tawm uas txhais cov ntaub ntawv rau SGML-familymarkup lus (GML, SGML, XML, HTML ). A DTD txhais cov ntaub ntawv tsim nyog ntawm XML. Nws txhais cov qauv ntaub ntawv nrog cov npe ntawm cov khoom siv tau thiab cov khoom siv.
Kuj paub, DTD thiab SGML yog dab tsi hauv HTML?
DTD (luv rau Doc type Definition) yog ib hom lus uas siv tau los txhais SGML (los yog XML, tab sis feem ntau XSD siv ntawm no) cov lus. A DTD qhia, cov ntsiab lus twg thiab cov khoom siv tau siv tau hauv cov ntsiab lus hauv ib hom lus.
Tsis tas li ntawd, vim li cas peb thiaj xav tau DTD? Lub hom phiaj ntawm DTD : Nws lub hom phiaj tseem ceeb yog los txhais cov qauv ntawm daim ntawv XML. Nws muaj cov npe ntawm kev cai lij choj thiab txhais cov qauv nrog kev pab los ntawm lawv. DTD muab kev tswj tsawg dua ntawm XML qauv.
Ib yam li ib tug yuav nug, doctype hauv HTML yog dab tsi?
Ib Daim Ntawv Sau Npe Tshaj Tawm, lossis DOCTYPE forshort, yog ib qho kev qhia rau lub web browser txog lub version ofmarkup lus nyob rau hauv uas ib tug web page yog sau. Cov ntaub ntawv forearlier versions ntawm HTML tau ntev vim qhov HTML lus yog SGML-raws li thiab yog li ntawd yuav tsum tau ib tug siv rau a DTD , tab sis tam sim no lawv yog obsolete.
DTD sawv cev rau dab tsi?
DTD
| Lub ntsiab lus | Txhais |
|---|---|
| DTD | Document Type Declaration (markup languages) |
| DTD | Hnub tim |
| DTD | Qhov rooj rau qhov rooj |
| DTD | Data Type Definition (XML file validation) |
Pom zoo:
Yuav ua li cas yog ib tug txheej txheem nyob rau hauv lub operating system dab tsi yog ib tug xov nyob rau hauv lub operating system?
Ib tug txheej txheem, nyob rau hauv cov nqe lus yooj yim tshaj, yog ib tug executingprogram. Ib tug los yog ntau tshaj threads khiav nyob rau hauv cov ntsiab lus ntawm cov txheej txheem. Ib tug xov yog ib qho tseem ceeb chav tsev uas theoperating system faib lub sij hawm processor. Lub threadpool feem ntau yog siv los txo tus naj npawb ntawm cov ntaub ntawv thov thiab muab kev tswj hwm ntawm cov neeg ua haujlwm threads
Internal DTD thiab External DTD yog dab tsi?
Ib DTD raug xa mus rau hauv DTD ifelements tau tshaj tawm hauv cov ntaub ntawv XML. Txhawm rau siv nws asinternal DTD, standalone attribute hauv XML tshaj tawm yuav tsum tau teem rau yog. Qhov no txhais tau hais tias cov lus tshaj tawm ua haujlwm ywj pheej ntawm qhov chaw sab nraud
Dab tsi yog txoj hauv kev virtual thiab txoj hauv lub cev hauv asp net?
Ua ntej tshaj, cia peb tau txais cov ntsiab lus ntawm ob qho tib si. Txoj kev lub cev - Qhov no yog txoj hauv kev tiag tiag cov ntaub ntawv nyob ntawm IIS. Txoj kev Virtual - Qhov no yog txoj hauv kev kom nkag mus rau cov ntaub ntawv uas tau taw qhia los ntawm sab nraud ntawm IIS daim ntawv thov folder
Internal DTD hauv XML yog dab tsi?
A DTD raug xa mus rau hauv DTD yog tias cov ntsiab lus tau tshaj tawm hauv cov ntaub ntawv XML. Txhawm rau siv nws li DTD sab hauv, tus cwj pwm nyob ib leeg hauv XML tshaj tawm yuav tsum tau teeb tsa rau yog. Qhov no txhais tau hais tias cov lus tshaj tawm ua haujlwm ywj pheej ntawm lwm qhov chaw
Dab tsi yog qhov txawv ntawm internal DTD thiab sab nraud DTD?
1 Teb. DTD tshaj tawm cov ntaub ntawv XML sab hauv lossis ua cov ntaub ntawv DTD sab nraud, tom qab txuas rau ib daim ntawv XML. Internal DTD: Koj tuaj yeem sau cov cai hauv XML daim ntawv siv kev tshaj tawm. Sab Nraud DTD: Koj tuaj yeem sau cov cai hauv cov ntaub ntawv cais (nrog