JavaScript: chinja nyaya - sarudzo mikana

Chikonzero ndechokuti nguva dzose zvakafanana, zvimwe tsika dziri yakawanda. Kana vakutarisire: mumwe ukoshi vachava nezvikonzero zvinoverengeka nokuda parinowanika. Chero zvazvingava, zvichienderana zvimwe zvinhu vanofanira kutora mhinduro imwe chete, kana vakutarisire.

Kunyange kana chisarudzo angava akawanda kusarudza chero chinangwa kuchaita nzira imwe chete, asi nzira kazhinji dzakawanda, uye tinofanira kuita chisarudzo.

Classic zvimiso okuti kana (ezvinhu) {1 algorithm, kana mamiriro ichokwadi} mumwe {2 algorithm, kana mamiriro ndeyenhema} anopa sarudzo mbiri chete. Asi kunyange mano zvakaoma nguva dzose anopa zvakawanda zvokusarudza.

A nyore "hapana", asi mumwe ezvinhu

JavaScript Design, ufambe nyaya = vakawanda tsika ezvinhu. Kunogona kuwanikwa vachishandisa zvakafanana Kana opareta mubatanidzwa. Zvisinei, pasina mubvunzo, muenzaniso wakakwana syntactically uye semantically zvakawanda zvechokwadi rokutanga. Mukuwedzera, chakarongwa chisarudzo musi wechipiri shanduro zvinoda zvikuru unyanzvi Developer:

Pane zvose kana (...) {...} zvimwe {...} uye edza {...} cath (...) {...} inopa pamusoro AJAX-mukutsinhana nzira iri algorithm. Kupindura kugadzira rinoitwa zvakafanana iine ndokunge mashoko.

JavaScript chinja nyaya: muenzaniso

Musiyano mukuru zvokunze kusarudza nezvechisarudzo kubva bedzi haugoni kunyora mbiri, uye vashoma namatombo mirayiro executable. Zvichava kuurayiwa kamwe chete kana vashoma.

Structure J avaScript chinja nyaya kunoita kuti pave muzvizhinji kuti algorithms zvichienderana kukosha shanduka kana mashoko. Zvakakosha kuyeuka kuti yakarurama kusarudza kuti algorithm vachaitwa musi chaiwo machisi tichitarisa mutengo chinja () uye kukosha zvisiri nyaya. The "1" uye nhamba 1 - ichi mhando kutendeuka hauna pano haisi chete.

Kuita Zvikamu akawanda

A maitiro chinoratidza akagadzira sarudzo J avaScript chinja nyaya ndiyo kusavapo mumabhuraketi kutigumbura - {...} akaronzesa chidzore chete mavambo uye kuguma opareta muviri. Chikamu chimwe nechimwe terminates nyaya yokumbozorora opareta, izvo zvingasava.

In mienzaniso iyi akapembera yokumbozorora yokutanga nyaya chikamu. Option kuruboshwe vachapa mugumisiro Variant2, nokuti pano kuti rinotanga kuuraya, uye pachake kurudyi zvichabviswa vagamuchira Variant1Variant2, sezvo ngakuitwe izvozvo pakutanga, asi hapana nezvinozoitika mamiriro wechipiri, uye kunze, hapana kuuraya mashoko wokutanga chikamu, ipapo chechipiri, pakati pavo hapana opareta kwemasikati, asi kaviri JavaScript chinja nyaya haadaro. Zvinofanira kucherechedzwa kuti shanduko iri shanduka iCond mumuviri mamiriro havapi kushanda.

Code zvechokwadi uye zvechokwadi dambudziko

JavaScript - mutauro mukuru, nokukurumidza, zvipfupi uye musoro pamwe kushandiswa nemarongerwo. JavaScript chinja nyaya kugadzirwa inoshanda zvakakwana, vachibvumira rondedzero unodikanwa siyana zvaungasarudza pamusoro chaizvo ezvinhu zvakajeka uye yakarurama.

Operator kusarudzwa anogona rakapinzwa mumwe. Kana zvikamu angava zvimiso mashoko, zvishwe, zvimwe zvivako. Hatifaniri kuregeredza kukura kwebasa variables. Rakashandiswa kwose kwose inorondedzerwa pasi pose.

Zvisinei, rirege kushungurudzwa JavaScript. Chinja nyaya - guru chokushandisa bazi, asi kwete pamatunhu mavhoriyumu Mobile romutemo. The akanyatsofungwa uye dzichipfekeka siyana zvaungasarudza wakarovedzwa, zvikuru zvakaoma hazvingashandurwi pashure achaita.

Dambudziko chairo havazombofi mira, uye kana musingadi kurangarira kuchinja mukufamba kwaro chisarudzo, kuti kubva pakupera basa, mumazuva kushanda kutanga kusika munhu ruzivo vachava pachena mashoko okuti uye dzakasiyiwa. The dambudziko Chokwadi, vachaenda mberi, uye nzvimbo zvichabviswa apedzwa.

Kubva nemaonero ichi, chikuru zvakaipira JavaScript chinja nyaya anowana kubva ukuru hwaro uye kunzwisisa. Kana iwe havashushi izvozvo, unogona kubudirira kuita chiine diki sarudzo.

Condition + yokugadzirisa = itsva kumativi kufamba

Ashandiswa akagadzira dambudziko approximates mushonga. Kunyange zvazvo dambudziko iri, kubudikidza tsanangudzo, pachayo haigoni kupedza chinhu, uye Zoom.

Mamiriro rinoshandiswa pose pose (private diki basa). mamiriro ezvinhu kuuraya = kuuraya vamwe bumbiro. Shandisa musi JavaScript chinja nyaya - ndiwo fashoni mashoko, uye yakajeka kudiwa. Sezvo kuitwa mumitauro yose, nokuti nyore uye nyore.

Kamwe kuberekwa "chirimi" uye "Tsamba", kufanana avo zvirongwa mitauro. Paiva hondo pamusoro yezwi dzaishandisa uye zvisiri. Ndiri kuedza kwayo chepamusoro dzichipfekeka werudzii zvirongwa kunyora. Nhasi, hombe yokuvaka nechido kunoita chinhu-zvinangwa pfungwa.

Zvisinei, kusvikira zvino mabasa ano vanowana kunokosha zvimiso mashoko avo. Asi musimboti pfungwa ano pakuti zvinhu pachavo kuisa zvinhu uye kuwana mhinduro. Pashure pezvose, chinhu - kutaridza nemarongerwo uye semantics.