Video: Dab tsi yog qhov chaw nyob hauv angular?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Qhov chaw . Cov qhov chaw yog cov ntawv qhia thaum daim ntawv lo yog ntab tab sis cov tswv yim yog khoob. Nws yog siv los muab cov lus qhia ntxiv rau tus neeg siv txog qhov lawv yuav tsum tau ntaus hauv cov tswv yim. Cov qhov chaw tuaj yeem teev los ntawm kev teeb tsa qhov chaw attribute rau lub caij.
Ntawm no, dab tsi yog kev siv qhov chaw?
Hauv computer programming, a qhov chaw yog ib tug cim, lo lus, los yog hlua ntawm cov cim uas yuav siv sij hawm qhov chaw ntawm cov ntaub ntawv zaum kawg. Piv txwv li, tus programmer yuav paub tias nws xav tau qee tus lej ntawm qhov tseem ceeb lossis qhov hloov pauv, tab sis tseem tsis tau paub tias yuav tsum nkag siab dab tsi.
Ib sab saum toj no, ua li cas koj ntxiv ib qhov chaw rau ib daim teb? Placeholder text yog dab tsi tshwm sim hauv koj nkag element ua ntej koj tus neeg siv tau inputted dab tsi. Nco tseg: Nco ntsoov tias nkag cov ntsiab lus yog kaw tus kheej. Teeb lub qhov chaw tus nqi ntawm koj ntawv sau mus rau "cat yees duab URL". Koj yuav tsum ntxiv qhov chaw attribute rau cov uas twb muaj lawm ntawv sau keeb.
Hauv qhov no, kev siv qhov chaw nyob hauv HTML yog dab tsi?
Cov qhov chaw attribute qhia ib tug luv luv hint uas piav txog tus nqi uas yuav tsum tau ntawm ib tug input teb (piv txwv li tus nqi piv txwv los yog ib tug luv luv piav qhia ntawm lub hom phiaj xav). Cov lus qhia luv luv tau tshwm sim hauv qhov chaw nkag ua ntej tus neeg siv nkag mus rau tus nqi.
Dab tsi yog lev hauv angular?
Kev tshaj tawm. Qhov < mat -form-field>, ib Angular Cov lus qhia, yog siv los tsim ib lub wrapper tshaj lub kaum sab xis Cheebtsam thiab yog siv los siv cov ntawv sau zoo li hauv qab, bold, lus qhia thiab lwm yam.
Pom zoo:
Qhov txawv ntawm qhov chaw nyob thiab qhov chaw nyob yog dab tsi?
Qee zaum, 'txoj kev chaw nyob' hais txog koj lub cev qhov chaw nyob ntawm qib zoo dua hauv nroog. Piv txwv li, '1313Mockingbird Lane', tsis muaj lub nroog lub npe txuas nrog. Tab sis yog, feem ntau nws tsuas yog ib daim ntawv rov qab kom paub qhov txawv ntawm qhov chaw xa ntawv (thaum chiv keeb) thiab tam sim no e-mail chaw nyob, chaw nyob hauv web, IPaddress, thiab lwm yam
Qhov chaw nyob ntawm lub cev thiab qhov chaw nyob qhov chaw nyob yog dab tsi?
Qhov sib txawv yooj yim ntawm Logical thiab lub cev chaw nyob yog qhov chaw nyob Logical yog tsim los ntawm CPU hauv kev xav ntawm ib qho kev pab cuam. Ntawm qhov tod tes, qhov chaw nyob ntawm lub cev yog qhov chaw nyob uas muaj nyob hauv lub cim xeeb. Cov txheej txheem ntawm txhua qhov chaw nyob uas tsim los ntawm CPU fora program hu ua Logical Address Space
Qhov txawv ntawm qhov chaw kub thiab qhov chaw txias yog dab tsi?
Thaum lub chaw kub kub yog ib daim qauv ntawm cov chaw khaws ntaub ntawv nrog tag nrho koj cov khoom siv kho vajtse thiab software ua haujlwm nrog koj lub xaib thawj zaug, qhov chaw txias tau muab tshem tawm - tsis muaj server hardware, tsis muaj software, tsis muaj dab tsi. Kuj tseem muaj qhov chaw sov uas nyob nruab nrab ntawm qhov chaw kub thiab qhov chaw txias los ntawm cov khoom siv
Dab tsi yog qhov chaw nyob thiab lub cev nyob hauv OS?
Qhov sib txawv yooj yim ntawm Logical thiab lub cev chaw nyob yog qhov chaw nyob Logical yog tsim los ntawm CPU hauv kev xav ntawm ib qho kev pab cuam. Ntawm qhov tod tes, qhov chaw nyob ntawm lub cev yog qhov chaw nyob uas muaj nyob hauv lub cim xeeb. Cov txheej txheem ntawm txhua qhov chaw nyob uas tsim los ntawm CPU rau ib qho kev pab cuam hu ua Logical Address Space
Qhov txawv ntawm qhov chaw nyob sib txuas lus thiab qhov chaw nyob ruaj khov yog dab tsi?
Qhov chaw nyob xa ntawv yog chaw nyob sib txuas lus piv txwv li qhov koj nyob tam sim no. & chaw nyob Apermanent yog ntawm koj cov ntaub ntawv yog sau rau ntawm koj daim ntawv pov thawj hnub yug & daim npav pov npav. Qhov chaw nyob ruaj khov & kev sau ntawv yuav zoo ib yam lossis txawv ntawm cov ntaub ntawv siv tau