Object. assign tsis luam cov qauv qauv thiab cov txheej txheem. Txoj kev no tsis tsim cov ntawv sib sib zog nqus ntawm Cov Khoom Siv, nws ua rau cov ntaub ntawv ntiav ntiav. Rau cov khoom uas muaj cov ntaub ntawv siv lossis cov ntaub ntawv nyuaj, cov ntaub ntawv siv tau theej rau cov khoom siv, tsis yog tsim cov khoom cais.
Puas yog tus neeg teb xov tooj sib sib zog nqus luam?
Tus neeg ua haujlwm sib kis ua sib sib zog nqus cov ntaub ntawv yog tias cov ntaub ntawv tsis nyob ze. Thaum koj muaj nested cov ntaub ntawv nyob rau hauv ib tug array los yog tawm tsam tus kis tus neeg teb xov tooj yuav tsim ib tug sib sib zog nqus luam ntawm cov saum toj kawg nkaus cov ntaub ntawv thiab ib tug ntiav luam ntawm cov ntaub ntawv nested.
Yuav ua li cas koj tob luam ib yam khoom?
Siv cov kab ke sib kis lossis Object. assign yog ib txoj hauv kev ntawm kev luam ib yam khoom hauv JavaScript. Ob qho tib si methdologies tuaj yeem siv sib npaug los luam cov khoom sib npaug ntawm ib qho khoom mus rau lwm yam khoom, nrog rau kev sib kis syntax yog luv dua ntawm ob.
Koj ua li cas tob luam ib yam khoom hauv JavaScript?
Tam sim no los tsim cov ntawv sib sib zog nqus ntawm ib qho khoom hauv JavaScript peb siv JSON. parse thiab JSON. stringify txoj kev.
Dab tsi yog kev luam tob?
Deep copy yog txheej txheem uas cov txheej txheem luam tawm tshwm sim rov ua dua Nws txhais tau tias ua ntej tsim cov khoom sau tshiab thiab tom qab ntawd rov ua dua nws nrog cov ntawv luam ntawm tus menyuam cov khoom pom hauv thawj. Nyob rau hauv cov ntaub ntawv sib sib zog nqus, ib daim qauv ntawm cov khoom yog theej rau lwm yam khoom.
