Inkinga enkulu nge-recursion ukuthi ingaholela kuma-loops angapheli. Uma udala ububanzi bezinombolo usebenzisa i-recursion, bese uzama ukufinyelela inombolo engaphakathi kwalobo bubanzi usebenzisa iphethini yokuphindaphinda efanayo, i-JavaScript izogcina iphelelwe yinkumbulo nokuphahlazeka.
function range(start, end) {
if (start === end) {
return [start];
} else {
return [start].concat(range(start + 1, end));
}
}
Lona umsebenzi wokuphindaphinda othatha inani lokuqala nesiphetho bese ubuyisela uhlu lwazo zonke izinombolo phakathi kwalawo manani amabili. Uma amanani esiqalo nesiphetho afana, ivele ibuyisele amalungu afanayo nalelo nani elilodwa. Uma kungenjalo, ibuyisela amalungu afanayo anenani lokuqala, bese izibiza futhi ngenani lokuqala elikhushulwe ngeyodwa futhi ihlanganisa lowo mphumela kuze kube sekugcineni kwamalungu afanayo.
Umtapo wezincwadi we-Enum
Umtapo wezincwadi we-Enum umtapo wezincwadi we-JavaScript ohlinzeka ngendlela elula yokusebenza ngezibalo. Ihlinzeka ngesethi yama-API akwenza kube lula ukwakha, ukufunda, ukubuyekeza, kanye nokubala amanani ekubaleni.
Umtapo wezincwadi we-Enum ungasetshenziswa ukudala izibalo zanoma yiluphi uhlobo lwedatha. Isibonelo, ungayisebenzisa ukuze udale ukubalwa kwemibala, izinombolo, izintambo, izinto, nanoma yiluphi olunye uhlobo lwedatha.
Umtapo wezincwadi we-Enum futhi uhlinzeka ngendlela elula yokufinyelela amanani angawodwana ekubaleni. Ungasebenzisa izindlela ze-get() kanye ne-set() ukuze ufinyelele amanani angawodwana ekubaleni. Indlela ethi get() ibuyisela inani endaweni eshiwo ekubalweni, kuyilapho indlela ethi () isetha inani endaweni eshiwo ekubalweni kunani elinikeziwe.
Izibalo
Ukubala kuyindlela yokuhlanganisa izinto ezingaguquki ndawonye. Ziyafana nezinhlawulo, kodwa zinenani elimisiwe lezinto.
Ukubala kungasetshenziswa ukugcina amanani ahlukene okuguquguquka okuthile. Isibonelo, ungasebenzisa ukubala ukuze ugcine imibala ehlukene engasetshenziswa kudokhumenti ye-HTML.
Ungakha ukubala ku-JavaScript usebenzisa umsebenzi we-Enum(). Ungasebenzisa futhi umsebenzi we-Enum() ukuze ufinyelele amanani athile ekubaleni.
Ukufinyelela ngohlelo
Kunezindlela ezimbalwa zokuthola ukufinyelela ngokohlelo kudatha ku-JavaScript. Indlela ejwayelekile kakhulu ukusebenzisa i-DOM. Ungafinyelela i-DOM ngokusebenzisa imodeli yento yedokhumenti (DOM). Le nto iqukethe lonke ulwazi mayelana nedokhumenti osebenza nayo. Ungasebenzisa lolu lwazi ukuze ufinyelele zonke izakhi kudokhumenti, kanye nezibaluli namanani azo.
Enye indlela yokuthola ukufinyelela okuhleliwe kudatha nge-JSON. I-JSON ifomethi esetshenziselwa ukugcina idatha. Ungasebenzisa i-JSON ukuze ugcine idatha ngefomethi yeyunithi yezinhlamvu, noma ungayisebenzisela ukugcina idatha ngefomethi yento. Ungasebenzisa futhi i-JSON ukuze ugcine idatha ngefomethi yamalungu afanayo. Ungathola ukufinyelela okuhleliwe ku-JSON ngokusebenzisa imojuli ye-json.
