首頁猿問社區(qū)求助 js 數(shù)組組合成需要的新數(shù)組

社區(qū)求助 js 數(shù)組組合成需要的新數(shù)組

JavaScript

紫衣仙女 2019-04-27 22:14:32

vararr=[{"areaName":"北歐","countryName":"阿布哈茲","packageName":"測試1","packagePrice":"1.0","mark":0},{"areaName":"西歐","countryName":"德國","packageName":"測試3","packagePrice":"14.0","mark":1},{"areaName":"北歐","countryName":"丹麥","packageName":"測試2","packagePrice":"14.0","mark":0}]需要的新數(shù)組格式為vararr2=[{"areaName":"北歐","mark":0,"list":[{"countryName":"阿布哈茲","packageName":"測試1","packagePrice":"1.0",},{"countryName":"丹麥","packageName":"測試2","packagePrice":"14.0",}]},{"areaName":"西歐","mark":1,"list":[{"countryName":"德國","packageName":"測試3","packagePrice":"14.0",}]}]

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呼喚遠方

TA貢獻1856條經(jīng)驗獲得超11個贊

functiontransform(arr){constobj={}arr.forEach(item=>{const{mark,areaName,...rest}=itemif(!obj[item.mark]){obj[mark]={mark,areaName,list:[rest],}}else{obj[mark].list.push(rest)}})returnObject.values(obj)}

反對回復(fù) 2019-04-27

慕桂英3389331

TA貢獻2036條經(jīng)驗獲得超8個贊

寫了一個方法，可能不是最簡單的實現(xiàn)方法，僅供參考：letarr=[];//這里是你上面的數(shù)據(jù)lettemp_obj={};arr.map(item=>{letbuff_property="mark"+item.mark;if(temp_obj[buff_property]){temp_obj[buff_property].list.push({"countryName":item.countryName,"packageName":item.packageName,"packagePrice":item.packagePrice})}else{temp_obj[buff_property]={"areaName":item.areaName,"mark":item.mark,"list":[{"countryName":item.countryName,"packageName":item.packageName,"packagePrice":item.packagePrice}]}}returnitem;})letarr2=Object.values(temp_obj);temp_obj=null;//使用完成，釋放內(nèi)存console.log(arr2);