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map循環(huán)嵌套,總是取得外層數(shù)組的最后一個(gè)值

map循環(huán)嵌套,總是取得外層數(shù)組的最后一個(gè)值

有兩組數(shù)組arr01和arr02現(xiàn)在下把a(bǔ)rr01數(shù)組中的某個(gè)字段添加到arr02中,現(xiàn)在問(wèn)題是最后得到的新數(shù)組總是arr01的最后一個(gè)字段letarr01=[{"account":"000000000000"},{"account":"111111111111"},{"account":"2222222222222"}];letarr02=[{"city":"北京"},{"city":"上海"},{"city":"廣東"}];letnewArr=[];arr01.map((cur01,eq)=>{arr01.map((cur02,index)=>{cur02.account=cur01.account;returnnewArr.push(cur);})})最后結(jié)果:newArr=[{"account":"2222222222222","city":"北京"},{"account":"2222222222222","city":"上海"},{"account":"2222222222222","city":"廣東"},{"account":"2222222222222","city":"北京"},{"account":"2222222222222","city":"上海"},{"account":"2222222222222","city":"廣東"},{"account":"2222222222222","city":"北京"},{"account":"2222222222222","city":"上海"},{"account":"2222222222222","city":"廣東"}];我想得到的結(jié)果是:newArr=[{"account":"000000000000","city":"北京"},{"account":"000000000000","city":"上海"},{"account":"000000000000","city":"廣東"},{"account":"111111111111","city":"北京"},{"account":"111111111111","city":"上海"},{"account":"111111111111","city":"廣東"},{"account":"2222222222222","city":"北京"},{"account":"2222222222222","city":"上海"},{"account":"2222222222222","city":"廣東"}];
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2 回答

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一只名叫tom的貓

TA貢獻(xiàn)1906條經(jīng)驗(yàn) 獲得超3個(gè)贊

你改變的是對(duì)象的引用地址所有最后改變的影響前面push進(jìn)去的了
varnewArr=[];
arr01.forEach(v1=>{
arr02.forEach(v2=>{
newArr.push(Object.assign({},v2,{
account:v1.account
}))
})
})
console.log(newArr)
                            
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