獲取設置爲相同的值

Question

我有JavaScript對象數組鍵：

objArray = [ 
    {"date":"07/19/2017 12:00:00 AM","count":"1000","code":"K100"}, 
    {"date":"07/21/2017 12:00:00 AM","count":"899","code":"C835"}, 
    {"date":"07/23/2017 12:00:00 AM","count":"700","code":"C837"}, 
    {"date":"07/23/2017 12:00:00 AM","count":"800","code":"K100"}, 
    {"date":"07/23/2017 12:00:00 AM","count":"50","code":"C837"} 
]; 

我想有相同的價值觀關鍵日期的所有值如下

• 刪除重複的日期值
• 將代碼值組合爲數組
• 總結重複日期值的計數值

這裏的預期輸出：

newObjArray = [ 
    {"date":"07/19/2017 12:00:00 AM","count":"1000","code":"K100"}, 
    {"date":"07/21/2017 12:00:00 AM","count":"899","code":"C835"}, 
    {"date":"07/23/2017 12:00:00 AM","count":"1550","code":["C837","K100","C837"]} 
] 

還有我都試過的方式，但可以得到預期的輸出。任何人都可以幫助我處理我以獲得所需的輸出。

Example

Answer 1

objArray = [ 
 
    {"date":"07/19/2017 12:00:00 AM","count":"1000","code":"K100"}, 
 
    {"date":"07/21/2017 12:00:00 AM","count":"899","code":"C835"}, 
 
    {"date":"07/23/2017 12:00:00 AM","count":"700","code":"C837"}, 
 
    {"date":"07/23/2017 12:00:00 AM","count":"800","code":"K100"}, 
 
    {"date":"07/23/2017 12:00:00 AM","count":"50","code":"C837"} 
 
]; 
 

 

 
var objs = objArray.reduce((obj, rec) => { 
 
    if (obj[rec.date] === undefined) { 
 
    rec.code = [rec.code]; 
 
    rec.count = Number(rec.count); 
 
    obj[rec.date] = rec; 
 
    } else { 
 
    obj[rec.date].count += Number(rec.count); 
 
    obj[rec.date].code.push(rec.code); 
 
    } 
 
    return obj; 
 
}, {}) 
 

 
console.log(Object.values(objs));