Iterate txhais li cas hauv javascript?

Cov txheej txheem:

Iterate txhais li cas hauv javascript?
Iterate txhais li cas hauv javascript?
Anonim

Nyob rau hauv JavaScript ib qho iterator yog ib yam khoom uas txhais cov kab ke thiab muaj peev xwm rov qab tau tus nqi thaum nws txiav tawm. … Ib zaug tsim, ib qho khoom siv iterator tuaj yeem hais meej meej los ntawm kev hu rov qab mus ntxiv. Iterating tshaj tus iterator yog hais kom haus iterator, vim hais tias nws yog feem ntau ua tau ib zaug xwb.

Yuav ua li cas rov hais dua hauv JavaScript?

Loops tso cai rau cov haujlwm ua haujlwm rov ua dua, xws li iterating los ntawm ib qho array, thaum ua raws li lub hauv paus ntsiab lus DRY (Tsis txhob Rov Ua Koj Tus Kheej). Lawv tuaj yeem ua ke thaum koj xav ua haujlwm ntau zaus, siv cov khoom sib txawv ntawm cov khoom siv txhua lub sijhawm.

Yuav ua li cas rau voj voog ua haujlwm hauv JavaScript?

A JavaScript rau lub voj executes ib qho thaiv ntawm cov lej ntev npaum li qhov xwm txheej muaj tseeb. JavaScript rau loops siv peb qhov kev sib cav: pib, mob, thiab nce. Cov xwm txheej qhia tau ntsuas ntawm txhua lub voj voog. Lub voj txuas ntxiv mus yog tias cov lus rov qab muaj tseeb.

Iterable txhais li cas hauv JavaScript?

Tus txheej txheem iterable tso cai rau cov khoom siv JavaScript los txhais lossis hloov kho lawv tus cwj pwm iteration, xws li cov txiaj ntsig dab tsi yog looped rau hauv … ntawm kev tsim. Qee hom built-in yog built-in iterables nrog tus cwj pwm iteration default, xws li Array lossis Daim Ntawv Qhia, thaum lwm hom (xws li Object) tsis yog.

Yuav ua li cas sib txawv hauv JavaScript?

IbJavaScript peb muaj cov lus hais nram qab no: thaum - loops los ntawm kev thaiv cov lej thaum qhov xwm txheej muaj tseeb . do… while - loops through a block of code ib zaug, thiab mam li rov qab lub voj thaum muaj qhov tseeb.

Pom zoo:

Nthuav cov khoom
Thaum twg peb lub pas dej tauv tsim?
Nyeem ntxiv

Thaum twg peb lub pas dej tauv tsim?

Peb lub Gorges Dam yog lub pas dej loj loj uas hla tus Dej Yangtze los ntawm lub nroog Sandouping, hauv Yiling District, Yichang, Hubei xeev, nruab nrab Tuam Tshoj, nqes ntawm peb Gorges. Peb Gorges Dam tau ua lub chaw nres tsheb loj tshaj plaws hauv ntiaj teb raws li kev teeb tsa muaj peev xwm txij li xyoo 2012.

Puas yog acetamide muaj ntxhiab tsw?
Nyeem ntxiv

Puas yog acetamide muaj ntxhiab tsw?

Cov tshuaj acetamide yog cov tshuaj acetic acid-derived uas tau txheeb pom tias yog tsw zoo li ammonia lossis vinegar. Nws tseem yuav cling rau qhov chaw uas musculus nyob rau hauv pw tsaug zog thiab yuav tau txais zaub mov scrounge. Vim li cas acetamide yaj hauv dej?

Kuv puas tau mob plawv?
Nyeem ntxiv

Kuv puas tau mob plawv?

Feem ntau, lawv tshwm sim los ntawm kev ntxhov siab thiab kev ntxhov siab, lossis vim tias koj tau muaj caffeine, nicotine, lossis cawv ntau dhau lawm. Lawv kuj tuaj yeem tshwm sim thaum koj cev xeeb tub. Muaj tsawg zaus, palpitations tuaj yeem yog ib qho cim ntawm lub plawv mob hnyav dua.