首頁猿問在線等！請教，如何把如下格式進(jìn)行整合

在線等！請教，如何把如下格式進(jìn)行整合

JavaScript

ibeautiful 2019-07-27 00:02:59

[{time:12/30/2018,cabin:'w',Type:'NonStop',dcp:37},{time:12/30/2018,cabin:'w',Type:'NonStop',dcp:37},{time:12/31/2018,cabin:'a',Type:'NonStop',dcp:37},{time:12/31/2018,cabin:'w',Type:'NonStop',dcp:37},{time:12/31/2018,cabin:'w',Type:'NonStop',dcp:37},{time:12/30/2017,cabin:'w',Type:'NonStop',dcp:37},{time:12/31/2017,cabin:'w',Type:'NonStop',dcp:37},{time:12/31/2017,cabin:'w',Type:'NonStop',dcp:37},{time:12/31/2017,cabin:'w',Type:'NonStop',dcp:37},{time:12/31/2017,cabin:'j',Type:'NonStop',dcp:37},][{time:12/30/2018,cabin:'w',Type:'NonStop',dcp:74,w:2},{time:12/31/2018,cabin:'w',Type:'NonStop',dcp:74,w:2},{time:12/31/2018,cabin:'a',Type:'NonStop',dcp:37,a:1},{time:12/31/2017,cabin:'w',Type:'NonStop',dcp:111,w:3},{time:12/31/2017,cabin:'j',Type:'NonStop',dcp:37,j:1},]請問各位大佬，如何把上面的數(shù)組整合成下面的數(shù)組形式啊，只要是日期相同，cabin相同，那么他們的其他字段的數(shù)值就相加,并且把cabin字段的value取出來變?yōu)橐粋€新的字段加入當(dāng)前對象，而它的值則是重復(fù)的數(shù)量，就是同一日期同一個cabin的數(shù)量

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2 回答

忽然笑

TA貢獻(xiàn)1806條經(jīng)驗獲得超5個贊

constresData=sourceData.reduce((prev,cur,index,src)=>{if(!index)return[{...cur,[cur.cabin]:1}]constprevEle=prev[prev.length-1]if(cur.time===prevEle.time&&cur.cabin===prevEle.cabin){prevEle[prevEle.cabin]++prevEle.dcp+=cur.dcp}else{prev.push({...cur,[cur.cabin]:1})}returnprev},[])

反對回復(fù) 2019-07-27

慕絲7291255

TA貢獻(xiàn)1859條經(jīng)驗獲得超6個贊

constnewArr=arr.reduce((a,b)=>{let{time,cabin,dcp}=b;letindex=a.findIndex(val=>{returnval.time===time&&val.cabin===cabin;});if(index>=0){letcur=a[index];cur[cabin]++;cur['dcp']+=dcp;}else{letclone={...b};clone[cabin]=1;a.push(clone);}returna;},[]);時間格式被轉(zhuǎn)換了，需要自行調(diào)整下