Izibonelelo zokufunda iJavaScript (JS) kwi-2022, ukuthandwa kunye namathuba, kutheni kufuneka ufunde i-JS? IJavaScript (JS) lulwimi lwenkqubo olusekwe kwiprototype. Ekuqaleni, ulwimi lwaphuhliswa ukwenzela ukuvuselela izixhobo ze-Intanethi, oko kukuthi, ukwenza iiwebhusayithi ziphendule ngokusemandleni kwaye ziphendule ngokukhawuleza kwimiyalelo yomsebenzisi. Oku kuquka iifestile ezizivelelayo, amaqhosha asebenzayo, ngokunqakraza apho inkqubo yenza isenzo esithile.
- JavaScript: isicelo esisebenzayo, esinika ulwazi lwe-JS
- Kutheni ulwimi lwenkqubo yeJavaScript luye lwaziwa kakhulu kwaye luyaqhubeka lufumana ukuthandwa: uluvo lweengcali ezinamava
- Yenza iisayithi ziphile
- Usetyenziso lwewebhu oluqhubela phambili lufumana ukuthandwa
- Kulula ukufunda
- Kutheni kufuneka ubeke ingqalelo kwi-JS xa ubhala izicelo, iirobhothi okanye ezinye iinjongo?
- Ngaba iJavaScript iya kuba nokuthandwa okunjalo kwixesha elizayo?
- Ngaba izakhono kunye nolwazi lweJavaScript luyimfuneko ngokwenene: okuhle kunye nokubi kokufunda olu lwimi lwenkqubo
- Ukuphuhliswa kweerobhothi zokurhweba: ngaba iJavaScript ifanelekile kwaye yintoni enokwenziwa ngayo
- Izinto eziluncedo kunye nezingeloncedo zokufunda, kunye nezinto ezinokwenzeka kulwimi lokuprograma lweJavaScript
JavaScript: isicelo esisebenzayo, esinika ulwazi lwe-JS
IJavaScript isetyenziswa kwiiprojekthi ezininzi zophuhliso lweseva yobugcisa. Njengomthetho, iziseko zabaxumi, izicelo ze-intanethi kunye nezixhobo zewebhu zakhiwe ngesiseko sekhowudi yolu lwimi lweprogram. IJavaScript isetyenziselwa ezi ntshukumo zilandelayo kunye nemisebenzi:
- Uphuhliso lweenkqubo ezisemgangathweni ezizinzisiweyo zeselula . Ezi ziinkqubo zenkqubo ezakhelwe ngokuzenzekelayo ngexesha lophuhliso lwe-OS.
- Ukuphuhliswa kwesoftware kunye ne-hardware inxalenye yenkonzo (i-backend) .. Kolu lwimi lwenkqubo, inxalenye yangaphakathi yezixhobo ezininzi, izicelo kunye neewebhusayithi nazo zibhaliwe. Oko kukuthi, ngoncedo lwekhowudi enye ebhalwe kwiJavaScript, unokwenza zombini isiseko somthengi kwaye uyila iseva yesayithi yangaphakathi.
- Ukuphuhliswa kweenkqubo zekhompyutha . I-JS isetyenziswe ekudalweni kweenkqubo zeofisi ezifana neMicrosoft, Skype, njl.
- Ukudalwa kweerobhothi zokurhweba ukurhweba . Kuba i-JS ilulwimi olulula ukulufunda, uninzi lwabarhwebi abafuna ukuphuhlisa irobhothi yokurhweba ngokwabo babhenela ekusebenziseni olu lwimi lwenkqubo.
Kutheni ulwimi lwenkqubo yeJavaScript luye lwaziwa kakhulu kwaye luyaqhubeka lufumana ukuthandwa: uluvo lweengcali ezinamava
IJavaScript yenye yezona lwimi zifunwayo kwihlabathi, ikwindawo yesi-7 kwisalathiso seTIOBE. Abacwangcisi benkqubo abanamava baqaphela izizathu ezininzi zokuvuswa kolwimi lwenkqubo lwangoku kwaye kutheni luqhubeka nokuthandwa.
Yenza iisayithi ziphile
Njengoko siphawulile ngasentla, ngoncedo lwe-JS, umthombo wewebhu unokuziswa kwisimo esiguqukayo, ukukhawuleza kunye nokwenza lula umsebenzi kuyo. Iifestile ezizivelelayo, amaqhosha asebenzayo asebenzayo, xa ucinezelwe, umyalelo othile uphunyezwa – konke oku kwenziwa ngesiseko sekhowudi yenkqubo yeSikripthi seJava.
Usetyenziso lwewebhu oluqhubela phambili lufumana ukuthandwa
I-PWA (izicelo zewebhu eziqhubekayo) iteknoloji eyindibaniselwano yesixhobo se-intanethi kunye nesicelo seselula, esithe, ngenxa yoko, sithatha indawo yeprogram ye-smartphone kunye newebhusayithi. Isetyenziswa ngokusebenzayo nguGoogle Corporation.
Kulula ukufunda
Ngelixa kukho ama-nuances okufunda naluphi na ulwimi lwenkqubo, kubandakanya iJavaScript, kulula kakhulu ukuyifunda kunye nokunyamezela iimpazamo. Nawuphi na umsebenzisi, ukuba unqwenela, uya kukwazi ukuqonda inkqubo yokubhala ikhowudi kunye nokwakha iimveliso ezifunwayo kwisiseko sayo.
Kutheni kufuneka ubeke ingqalelo kwi-JS xa ubhala izicelo, iirobhothi okanye ezinye iinjongo?
Kukho izizathu ezininzi zokusebenzisa iJavaScript:
- isixa esikhulu solwazi malunga nokufunda, iinuances kunye nomsebenzi unokufumaneka kwindawo yoluntu kwi-Intanethi;
- uluhlu olubanzi lwezixhobo zokusebenza;
- Uluntu olukhulu nolunobuhlobo oluya kukunceda ukuba ulungise imiba ethe yavela;
- olu lwimi lwenkqubo lunokusetyenziswa kwiindawo ezichasene ngokupheleleyo: ukubhala isiseko somthengi, umncedisi wesayithi, usetyenziso lweselula, njl.;
- imfuno ephezulu kwimarike yabasebenzi.
Phawula! Isantya, ukulungeleka kunye nokwakhiwa kwekhowudi yeprogram iyakhula. Kodwa musa ukoyika oku – ngenxa yoluntu olukhulu, umdla wabantu abaninzi kolu lwimi lwenkqubo, uluhlu olubanzi lwezixhobo zomsebenzi, umsebenzisi ngamnye uya kukwazi ukufunda nokuzimela ngokuzimeleyo imveliso yenkqubo yabo.
Ngaba iJavaScript iya kuba nokuthandwa okunjalo kwixesha elizayo?
Inkqubo yetekhnoloji ayimi ngxi kwaye, ngokutsho kwabaprogram abanamava, kungekudala bekukho itekhnoloji enokuthi ithathe indawo yokusebenza kwekhowudi yenkqubo kwisikhangeli, kodwa namhlanje banamandla abuthathaka kune-JS. Kubalulekile ukuba uninzi lweenkampani ezinkulu namhlanje zityala imali rhoqo ekuphuhliseni olu lwimi lwenkqubo, kwaye ngenxa yoko alulahleki ukufaneleka kwalo, luya luthandwa ngakumbi kwaye lusebenza kakuhle. Ke ngoko, malunga noqikelelo lweminyaka emihlanu ukuya kwelishumi ezayo, ukuthandwa kweJavaScript kuya kukhula, kuba kusekho i-interfaces ezininzi kunye neendawo ezifileyo kwi-Intanethi ekufuneka ziqwalaselwe. Okuza kwenzeka emva koko kunzima ukuqikelela ngenxa yetekhnoloji ehlala iguquka.
Ngaba izakhono kunye nolwazi lweJavaScript luyimfuneko ngokwenene: okuhle kunye nokubi kokufunda olu lwimi lwenkqubo
Abadwelisi beprogram abanamava bathi ulwimi luya kuba lufanelekile ixesha elide, kwaye izakhono zayo zokusebenza ziphantse zingenasiphelo. Kukho iilwimi ezininzi zokucwangcisa, kodwa i-JS kulo mba yahlulwa ngokulula kwayo, i-ecosystem kunye nokufikeleleka. Kubalulekile! Nangona kunjalo, kuyafuneka ukuba kuthathelwe ingqalelo ukuba ulwimi lwe-JS luhlala luvela, kwaye kuya kufuneka uhlale ufunda itekhnoloji entsha kwaye uyisebenzise ngokusebenza. Kutheni kufuneka ufunde i-JS:
- I-ecosystem elula, exhomekeke nakumsebenzisi ophakathi.
- Ukusebenza okubanzi kunye nesethi enkulu yezixhobo zokusebenza.
- Izakhono aziyi kuba luncedo, zinokuba luncedo zombini kwimivuzo kunye neenjongo zomntu.
Izinto ezingeloncedo nge-JS:
- Iiteknoloji ezintsha ziziswa rhoqo kulwimi, kufuneka zifundwe kwaye zikwazi ukuzisebenzisa ekusebenzeni.
Izakhono kunye nezakhono zolwimi azifuneki kumsebenzisi olula ongalandeli injongo yokubhala iinkqubo, abancedisi okanye akacebi ukudibanisa ubomi bakhe kunye neprogram kwixesha elizayo, nangona kunjalo, kwabo bafuna ukuqonda le ndawo, oku kuya kuba ubungqina obongezelelweyo bomsebenzi.
Ukuphuhliswa kweerobhothi zokurhweba: ngaba iJavaScript ifanelekile kwaye yintoni enokwenziwa ngayo
Uninzi lwabarhwebi bafuna ukuba nomncedisi wenkqubo yokurhweba kwi-stock exchanges, kodwa ininzi yabo ifuna ukubhala i-robot ngokwayo, kwaye ingayaleli esele yenziwe. Ngokuqinisekileyo, inzondelelo enjalo yamkelekile, kuba kunokwenzeka ukubeka umsebenzi ofunekayo kwimveliso yakho. Nangona kunjalo, kuthekani ukuba umrhwebi akaziqondi iilwimi zeprogram, kwaye i-JS flickers rhoqo ngoku kwaye kwiirobhothi ezidumileyo zokurhweba, ngaba kufanelekile? Iingcali ziya kuthi kungcono ukusebenzisa i-C / C ++/C # ukubhala iirobhothi zokurhweba, kodwa ezi lwimi zeprogram azizona zifutshane kwaye kulula ukuzifunda, kwaye ihlabathi alipheli apho. Ukuba usebenzisa i-JS xa ubhala i-bot yokurhweba, ngoko inkqubo iya kuthatha ixesha elide, kodwa ukusebenza komncedisi,
- I-syntax emfutshane, ikhowudi ecacileyo kunye nezixhobo ezibanzi zomsebenzi okhululekileyo.
- Ulwimi jikelele: oko kukuthi, umphuhlisi uya kukwazi ukubeka kwi-bot yakhe naziphi na iimpawu eziyimfuneko kwinkqubo yokubhida eyimpumelelo.
- IJavaScript inethemba elikhulu lophuhliso, ulwimi luhlaziywa rhoqo ngetekhnoloji entsha, enika umphuhlisi amathuba angakumbi okuphucula irobhothi.
- Olu lwimi lwenkqubo luxhaswa luninzi lwamashishini otshintshiselwano, ngoko ke iirobhothi zenza umsebenzi wazo ngokufanelekileyo.
Izinto eziluncedo kunye nezingeloncedo zokufunda, kunye nezinto ezinokwenzeka kulwimi lokuprograma lweJavaScript
| Iingenelo | Iziphene |
| Isasazeke kwaye iyahambelana namaqonga ahlukeneyo. Nasiphi na isikhangeli kunye ne-OS iyaluxhasa olu lwimi. Kwakungekho ngxaki ngokuthumela izicelo okanye ukuqaliswa kwemithombo yewebhu okanye kwi-PC okanye kwisixhobo esiphathwayo ngexesha lonke ikhowudi isetyenziswe. | Xa uphuhlisa, umqokeleli akayi kunceda. Oko kukuthi, umphuhlisi akakwazi ukufumanisa ukuba ikhowudi ebhaliweyo iya kusebenza ade afikelele kumgca othile apho oku kukhangela kufumaneka khona. |
| Usetyenziso lweJavaScript alufuni kufakelo kwidesktop yekhompyuter okanye esinye isixhobo – ikhowudi ibhaliwe kwisikhangeli. | Xa ubhala imveliso, kuya kufuneka usebenzise ezinye izixhobo. I-JS ayikuvumeli ukuguqulwa kwefayile, igalelo kunye neentshukumo zemveliso. Ke ngoko, umphuhlisi kuya kufuneka abhenele ekusebenziseni amathala eencwadi eqela lesithathu kwinkqubo yokubhala. Kodwa ezo zinokuthi emva koko zisilele kwikhowudi. |
| Kulula ukufunda. Okungakholelekiyo, kuba olu lwimi lwenkqubo lusebenza kakuhle kwaye luthandwa kangangokuba lunokubonakala ngathi lufanele lube nzima ukulufunda, kodwa nabantwana esikolweni bafundiswa izakhono zokulusebenzisa. I-syntax kunye ne-ecosystem iyaqondakala kwaye icacile, kwaye inani elikhulu lezixhobo zokusebenza kwandisa kuphela amathuba omphuhlisi. | Ukhuseleko oluphantsi. Zininzi iikhowudi zokubhala ezifumanekayo kwi-Intanethi, ngoko ke akukho siqinisekiso sokuba imveliso esekwe kwi-JS ayisayi kuqhekezwa kwixesha elizayo. |
| Ulwimi olukwinqanaba eliphezulu. Oku kuthetha ukuba kwinkqubo yolu lwimi sele kukho indibaniselwano yezenzo, usebenzisa onokuthi ubhale ngokulula ikhowudi. Oko kukuthi, umphuhlisi akafuneki ukuba amisele isenzo ngasinye, ulwimi luya kubonelela ngekhowudi ngokwalo. Kodwa oku akuphazamisi amandla omsebenzisi. | |
| Ukukhawuleza ekusebenzeni. Iimveliso ezibhalwe kwiJavaScript zahlulwa ngokuphila kwazo, ukuphendula ngokukhawuleza kunye nokuguquguquka kwazo. |
Izibonelelo zokufunda iJavaScript, zithini iimpawu kunye neengenelo ze-JS: https://youtu.be/fqsCkxnXqbk JavaScript lulwimi lwenkqubo olugqwesileyo olusebenzayo hayi kwabaqalayo kuphela, kodwa nakwiingcali ezinamava. I-syntax kunye ne-ecosystem kulula ukuyifunda, kwaye uluhlu olubanzi lwezixhobo luyakwandisa ukhetho lomphuhlisi. Kwaye ukufunda olu lwimi lwenkqubo ukuphakamisa izakhono zakho zobungcali okanye ukuyisebenzisela iinjongo ezithile, okanye hayi – kuxhomekeke kuye wonke umntu ukuba azenzele isigqibo.
