Imposiso: ntoni na kwaye wadala ngayo

rhoqo kwi-Internet, usenokudibana sexesha ezifana "loxwebhu lokuchazaQXml". Yintoni na yaye kutheni ufuna? Kwenzeka ukuze badwelisi benkqubo ukunika umsebenzi Spars nasiphi na isiza. Okanye njengomsebenzisi oqhelekileyo lijongene binzana akakwazi ixabiso layo ezinjalo.

definition

Ukuba uthatha ingqiqo jikelele, lo ulinganiso - ukulandelelana magama xa kuthelekiswa imithetho linear ulwimi oluthile kunokuba nawuphi na umntu, ezisetyenziswa ngayo kuqhakamshelwano. Kananjalo ngokusemthethweni ulwimi, ezifana ulwimi lokuprograma.

Kwaye ngokuphathelele kumaziko ukuphendula umbuzo malunga lokuguqula - "yintoni", "kutheni ukusetyenziswa" - kunokuthiwa ukuba le nkqubo lokuguqula ezilandelelanayo ingcaciso iyafumaneka kwi kumaphepha e web. Okubhaliweyo apha uluhlu lwe data ukuba lubekwa alungiswe kwaye yakhiwe ngokusebenzisa ikhompyutha kunye nolwimi lwabantu. Le yokugqibela inika ulwazi ngqo, apho abantu beze. Kunye neelwimi zokuhlela ucacise ukubonisa njani oku data kwi monitor lomsebenzisi.

khangela umxholo

Xa umnini kudala kuphela indawo yakhe, yena ujamelene nengxaki: nalapho unokufumana i isiqulatho ukugcwalisa? Eyona ndlela ilungileyo ukuba bafune WAN. Ngapha koko, kukho ngamabona ezininzi nolwazi. Kodwa ke kukho ubunzima obuthile:

• Ekubeni intanethi lukhula rhoqo nokuphuhlisa, kucacile ukuba isiza kufuneka iqulathe imali enkulu ulwazi ukuze ube ingenelo phezu khuphiswano. Namhlanje, umxholo kufuneka abe kakhulu kunene. A ngesandla ukugcwalisa njengolwazi ezininzi site kunzima kakhulu.
• Ekubeni abantu aninako ukukhonza uthotho ulwazi ngonaphakade-ukutshintsha ekufuneka loxwebhu lokuchazaQXml. Oko kuya kunika? utshintsho ingcaciso kunye nenkqubo ezenzekelayo.

kwizazi kohlobo

A program owenza inkqubo lokuguqula, xa kuthelekiswa umntu kwiqela lokulungileyo:

• Wakhawuleza ndihamba amawaka kumaphepha e web.
• Akukho ngxaki uya kwabelana data yobugcisa kunye nolwazi kumntu ekunene.
• Ngaphandle Imposiso ulahle ezingeyomfuneko, kusale nje oko kuyimfuneko.
• Khupha ukuphakheja data eyimfuneko imboniselo yomsebenzisi.

Kakade ke, iziphumo zokugqibela ziya kusafuneka unyango ethile. Akukhathaliseki ukuba i spreadsheet okanye ledatha. Kodwa kulula kakhulu ukuba uyenze ngesandla, kunokuba usebenzise i lokuguqula. Into ayenzayo, kucacile - ixesha kunye nomgudu ukonga.

design

ezahlukeneyo iilwimi kweenkqubo esisetyenziswayo ukwenza parsers. I-common uninzi scripting iilwimi. Oku kuthetha ukuba zibhaliwe leempendulo. Yintoni iphepha leempendulo yintoni imposiso ungenziwa kusetyenziswa ulwimi ziya kuqwalaselwa kamva.

Ukudalwa inkqubo kohlobo ayidingi ulwazi ezibalulekileyo ulwimi lokuprograma. ulwazi nokuphela esisiseko malunga nobuchwepheshe. Kodwa ke into ukuze uyazi kusenjalo kuyimfuneko. Ngoko ke, ukuze ukwazi ukwenza njani ulinganiso, oko kukuthi, lo analyzer inkqubo, kufuneka ufunde ezi zilandelayo:

• Kuba okokuqala ukusebenza inkqubo algorithm kufuneka uhlahlelo olunzulu ikhowudi yemvelaphi, amaphepha e web, nto leyo ukunikela. Akukho akakwazi ukwenza ngaphandle ulwazi ubuncinane avareji zobugcisa nokushicilela. Le HTML, CSS kunye nolwimi JavaScript.
• Ukuba singene nzulu kulo mba, kufuneka ufunde iteknoloji ebizwa DOM. Lunika ithuba lokuba ukusebenza ngempumelelo kakhulu kwi emigangatho iphepha le web.
• Eyona nto inzima Isigaba - ukubhala kohlobo. Apha kuyimfuneko ukuba ilifa sisixhobo itekisi processing. badwelisi benkqubo abanamava basoloko ukusebenzisa le njongo, amabinzana rhoqo, nto leyo zinamandla ngokwaneleyo. Kodwa ke amandla ayikho developer nganye. Apha kufuneka icinge okhethekileyo. Isisombululo kangangoko kukusebenzisa i amathala eencwadi esele zenziwe ezaye zadalwa ngokukodwa lokuguqula. Yintoni na le thala? Le ncwadi igcwele nenkqubo ikhowudi, esele iqulethe yonke imisebenzi ukwenzela uhlalutyo.
• Kunqweneleka kakhulu ukuqonda isinxulumanisi senkqubo into ebomini, ethi ixhaswe naluphi na ulwimi lokuprograma.
• Inqanaba lokugqibela ibandakanya uhlahlelo lweziphumo zokuhlela i data ukuba yakhiwe kwaye igcinwe. Akukho akakwazi ukwenza ngaphandle ulwazi zolwazi.
• Kufuneka ulwazi kunye ilifa imisebenzi efanelekileyo yokusebenza fayile. Ngapha koko, le datha kuya kufuneka ukuba ubhale kuyo ezi fayile efanayo, kwaye ngoko, mhlawumbi, aguqulwe ibe ifomati spreadsheet.

izigaba

Ukuba yonke kuyahlangatyezwana neemfuno, inkqubo elandelayo zingahlulwa zibe ngamanqanaba:

1. Kwisigaba sokuqala lokuguqula ukufumana amaphepha e web ikhowudi yemvelaphi.
2. Inyathelo elilandelayo - utsala idata eyimfuneko evela womshicileli. Kukho ezilahliweyo ikhowudi okungeyomfuneko, ulwazi ilungiswe ngokwezi elinegunya.
3. Emva data abaphumeleleyo baya igcinwe luhlobo ngakumbi phambili.
4. Ekubeni le akunalo iphepha elinye, kwaye ukusuka amisiweyo, lo algorithm kufuneka akwazi ukuhamba ukuya kwiphepha elilandelayo.

Ngoko ke, uzama uku - yintoni na? Le inkqubo ukuhlaziya umxholo we sayithi kunye esizimeleyo ulwazi olufunayo. Ukusebenzisa ulwazi ngentla, kunokwenzeka ukuba ukugcwalisa iziza babo umxholo omninzi ngokuzenzekelayo. Oku kwenza kube lula ukufumana ixesha yaye ephumelela ukhuphiswano nzima kwi saytostroiteley emarikeni.