Cov txheej txheem:
- Babel yog dab tsi thiab vim li cas siv nws?
- Thaum twg kuv yuav tsum siv Babel?
- Babel ua haujlwm JavaScript li cas?
- Puas yog Babel tseem xav tau xyoo 2020?
Video: Dab tsi yog babel rau hauv javascript?
2024 Tus sau: Fiona Howard | [email protected]. Kawg hloov kho: 2024-01-10 06:38
Babel yog lub cuab yeej cuab tam uas yog qhov tseem ceeb siv los hloov ECMAScript 2015+ code rau hauv rov qab tau tshaj version ntawm JavaScript hauv cov browsers tam sim no thiab qub lossis ib puag ncig.
Babel yog dab tsi thiab vim li cas siv nws?
Babel yog qhov pub dawb thiab qhib qhov chaw JavaScript transcompiler uas yog qhov tseem ceeb siv los hloov ECMAScript 2015+ (ES6+) code rau hauv rov qab tau tshaj version ntawm JavaScript uas tuaj yeem khiav los ntawm laus JavaScript engines. … Babel plugins yog siv los hloov cov syntax uas tsis tau txais kev txhawb nqa dav dav rau hauv qhov rov qab-compatible version.
Thaum twg kuv yuav tsum siv Babel?
Yuav tsum siv Babel los ua nco ntsoov tias txhua tus yuav tuaj yeem khiav koj tus lej , lwm yam koj tuaj yeem txhim kho yam tsis muaj nws.
Yog koj xav tau:
- siv cov qauv (nrog xav tau lossis ntshuam …)
- use JSX.
- txhawb nqa ntau browsers.
- siv cov yam ntxwv siab dua (async / tos), qee qhov tseem nyob hauv cov lus pom zoo (decorators, class properties..)
Babel ua haujlwm JavaScript li cas?
Babel yog a JavaScript transpiler uas hloov cov ntug JavaScript rau hauv ES5 JavaScript qub uas tuaj yeem khiav hauv txhua qhov browser (txawm cov qub). Nws ua rau muaj tag nrho cov suab thaj syntactic uas tau ntxiv rau JavaScript nrog cov tshiab ES6 specification, nrog rau cov chav kawm, rog xub thiab ntau kab.
Puas yog Babel tseem xav tau xyoo 2020?
Nyob rau xyoo 2020, cov neeg tsim tawm pem hauv ntej tseem nkim sijhawm ntau nrog kev siv ntau dhau. Babel tau pom los ntawm qee qhov yog qhov tsim nyog, tab sis kuv xav qhia koj tias nws tsis yog.
Pom zoo:
Nyob rau hauv anemia yog dab tsi yog qhov stimulus rau zus tau tej cov erythropoietin?
Tsis muaj O 2 (hypoxia) yog qhov kev txhawb nqa rau kev sib txuas ntawm erythropoietin (Epo), feem ntau hauv ob lub raum. Epo yog qhov muaj sia nyob, kev loj hlob thiab qhov sib txawv rau cov erythrocytic progenitors, tshwj xeeb tshaj yog cov colony-forming units-erythroid (CFU-Es) .
Moonblink nyob rau hauv dab tsi yog dab tsi?
Muaj ib yam mob hu ua nyctalopia, tseem hu ua lub hli ntsais, uas yog qhov tsis muaj peev xwm pom hauv qhov tsaus ntuj. Tab sis qhov ntawd tshwm sim vim qhov tsis muaj vitamin A . Vim li cas lub hli ntsais? Thaum qhov chaw txav mus, gases uas cuam tshuam lub hnub tuaj yeem khiav tawm ntawm lub hli sab hauvQhov no yuav piav qhia txog qhov tshwm sim luminous, qee qhov uas nyob ntev li teev.
Cov lus teb rau lo lus nug nyob rau hauv lub tsev hais plaub ntawm pos thiab roses yog dab tsi?
Txoj cai ua ntej yuav tuag, Feyre paub cov lus teb rau Amarantha's riddle yog " love". Nws hais tias nws nyob rau hauv nws tuag ua pa thiab cov fairies tau tso tawm tam sim ntawd ntawm lawv lub qhov ncauj qhov ntswg thiab lub hwj chim lords tau muab rov qab .
Nyob rau hauv nomothetic causal piav dab tsi yog qhov tsom rau qhov ua rau?
Nomothetic causal explanations focus on objectivity, prediction, and generalization. Cov txheej txheem rau kev sib raug zoo ntawm nomothetic causal yuav tsum muaj kev sib raug zoo plausible thiab nonspurious; thiab qhov ua rau yuav tsum ua ntej qhov tshwm sim hauv lub sijhawm .
Dab tsi yog callback ntuj raug txim hauv javascript?
Callback ntuj raug txim yog tshwm sim uas cuam tshuam rau JavaScript tus tsim tawm thaum nws sim ua ntau yam haujlwm asynchronous ib qho tom qab lwm tus Los ntawm nesting callbacks nyob rau hauv xws li ib txoj kev, peb tau yooj yim xaus nrog kev ua yuam kev, nyuaj rau nyeem, thiab nyuaj rau tswj code.
