Ib qho array puas tuaj yeem muaj ntau hom ntaub ntawv?

2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47

Ntau hom ntaub ntawv hauv ib Array . Tsis yog, peb khaws tsis tau ntau datatype hauv ib Array , peb ua tau khaws cov ntaub ntawv zoo sib xws nkaus xwb hauv ib qho Array.

Ib yam li ntawd, nws tau nug, koj puas tuaj yeem khaws ntau hom ntaub ntawv hauv ib qho array?

Array ncaj qha. Koj tuaj yeem khaws cia cov khoom uas nws hom ntaub ntawv yog sib npaug rau, los yog muab los ntawm, lub hom ntaub ntawv ntawm array . Qhov no txhais tau tias koj tuaj yeem khaws ntau hom ntaub ntawv , yog hais tias lawv muab los ntawm ib tug ntau puag hom , los yog siv ib qho kev sib txuas.

Tsis tas li ntawd, ib qho array puas tuaj yeem muaj ntau hom ntaub ntawv JavaScript? Cov Array hauv JavaScript yog lub ntiaj teb cov khoom uas muaj cov npe ntawm cov khoom. Nws zoo ib yam li tej sib txawv ,v koj siv tau nws tuav tej hom ntawm cov ntaub ntawv . Ib qho tseem ceeb hauv ib qho array tau ua ntawm ib qho hom , thiab txawv cov ntsiab lus ntawm tib yam array tau ua ntawm ntau hom : hlua, boolean, txawm khoom lossis lwm yam arrays.

Ib yam li ntawd, koj tuaj yeem nug, ib qho array puas muaj cov ntaub ntawv sib txawv?

Arrays tuaj yeem muaj ib yam hom ntawm cov khoom muaj nqis (primitive hom los yog khoom), tab sis koj ua tau tsis khw ntau hom hauv ib leeg array . Koj ua tau muaj ib array ntawm integers los yog ib array ntawm cov hlua los yog ib qho array ntawm arrays , mas koj ua tau 'tsis muaj array uas muaj , piv txwv li, ob txoj hlua thiab cov lej.

Cov npe puas tuaj yeem muaj ntau hom ntaub ntawv?

Tsis muaj teeb meem tshwm sim hauv muaj ntau hom ntaub ntawv hauv a lis . Koj tuaj yeem xav txog, txawm li cas los xij, siv lub tuple es tsis yog a lis . Los ntawm lub rooj sib tham, tuples yog siv thaum muaj pes tsawg leeg ntawm qhov sib lawv liag; cov npe yog siv thaum koj yuav ntxiv rau lossis tshem tawm ntawm qhov sib lawv liag.