Video: JSON cov ntaub ntawv khaws cia li cas?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
JSON muaj raws li ib txoj hlua - pab tau thaum koj xav xa cov ntaub ntawv hla ib lub network. Nws yuav tsum tau hloov mus rau ib haiv neeg JavaScript khoom thaum koj xav nkag mus rau lub cov ntaub ntawv . A JSON khoom tuaj yeem yog khaws cia nyob rau hauv nws tus kheej cov ntaub ntawv, uas yog yeej ib txwm ib tug ntawv nyeem cov ntaub ntawv nrog ib tug extension ntawm. json , thiab MIME hom kev thov / json.
Yog li ntawd, JSON cia yog dab tsi?
JSON yog syntax rau khaws cia thiab sib pauv cov ntaub ntawv. JSON yog cov ntawv nyeem, sau nrog JavaScript object notation.
Kuj Paub, JSON ua haujlwm li cas? JavaScript Object Notation ( JSON ) yog ib txoj hauv kev khaws cov ntaub ntawv hauv kev sib koom ua ke thiab yooj yim. Cov ntaub ntawv yuav tsum yog nyob rau hauv daim ntawv ntawm cov ntawv nyeem thaum sib pauv ntawm ib tug browser thiab ib tug neeg rau zaub mov. Koj tuaj yeem hloov txhua yam khoom siv JavaScript rau hauv JSON thiab xa JSON mus rau lub server.
Tsis tas li ntawd, JSON cov ntaub ntawv zoo li cas?
A JSON khoom yog key-value cov ntaub ntawv hom ntawv uas feem ntau rendered nyob rau hauv curly braces. Key-value khub muaj ib txoj kab nruab nrab ntawm lawv ib yam li hauv "key": "value". Txhua tus khub tseem ceeb-tus nqi yog sib cais los ntawm ib qho comma, yog li qhov nruab nrab ntawm a JSON zoo li qhov no: "key": "value", "key": "value", "key": "value".
JSON format piv txwv yog dab tsi?
JSON Yam khoom Piv txwv A JSON khoom muaj cov ntaub ntawv nyob rau hauv daim ntawv ntawm tus yuam sij/tus nqi khub. Cov yuam sij yog cov hlua thiab qhov tseem ceeb yog qhov JSON hom. Cov yuam sij thiab qhov tseem ceeb yog cais los ntawm txoj hnyuv. Txhua qhov nkag (tus yuam sij / tus nqi khub) raug cais los ntawm comma.
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