TA貢獻1820條經驗 獲得超10個贊
constary=[{code:1,num:20},{code:1,num:10},{code:2,num:15}]functionmerge(list){letresult=[]letcache={}list.forEach(item=>{letkey=item.codeletindex=cache[key]if(index!==undefined){result[index].num+=item.num}else{result.push(Object.assign({},item))cache[key]=result.length-1}})returnresult}merge(list)
TA貢獻1860條經驗 獲得超9個贊
functionmerge(arr){letres={};for(letitemofarr){if(res[item.code])res[item.code].num+=item.num;elseres[item.code]={code:item.code,num:item.num};//Avoidmodifyingtheoriginalobject.}returnObject.values(res);}
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