Video: Dab tsi yog qhov txawv ntawm kev kawm thiab BehaviorSubject?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Lub xwb Qhov txawv ntawm BehaviorSubject thiab Kawm paub yog BehaviorSubject muaj tus nqi pib uas yuav raug tso tawm thaum sau npe rau.
Yog li ntawd, dab tsi yog kev kawm thiab BehaviorSubject?
BehaviorSubject yog hom tshwj xeeb ntawm Kawm paub uas nws tsuas txawv yog tias nws yuav emit tus nqi kawg raws li ib tug tshiab soj ntsuam lub subscription.
Secondly, dab tsi yog kev kawm thiab BehaviorSubject nyob rau hauv angular? A Kawm paub yog ob qho tib si soj ntsuam thiab soj ntsuam. A BehaviorSubject a Kawm paub uas tuaj yeem tawm tus nqi tam sim no ( Cov kawm tsis muaj lub tswv yim ntawm tus nqi tam sim no). Qhov ntawd yog qhov tsis meej pem. Qhov yooj yim yog siv nws. Cov BehaviorSubject tuav tus nqi uas yuav tsum tau muab faib rau lwm yam.
Yog li ntawd, BehaviorSubject yog dab tsi?
BehaviorSubject yog hom kev kawm, ib qho kev kawm yog hom tshwj xeeb ntawm kev saib xyuas kom koj tuaj yeem sau npe rau cov lus zoo li lwm yam kev pom. Cov yam ntxwv tshwj xeeb ntawm BehaviorSubject yog: Nws xav tau tus nqi pib raws li nws yuav tsum ib txwm rov qab tus nqi ntawm kev tso npe txawm tias nws tsis tau txais qhov txuas ntxiv ()
Dab tsi yog qhov txawv ntawm observable thiab subject?
Tej zaum qhov tseem ceeb dua kev sib txawv ntawm Subject thiab Pom tau yog a Kawm paub muaj xeev, nws khaws ib daim ntawv teev cov neeg soj ntsuam. Ntawm qhov tod tes, ib Pom tau yeej yog ib txoj haujlwm uas tsim kev soj ntsuam. Thaum Cov kawm yog Observables , Cov kawm kuj siv qhov Observer interface.
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