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[js] 对象数组key值相等value相加


let arr = [{
"语文": 100,
"数学": 100
}, {
"语文": 100,
"数学": 100
}, {
"语文": 100,
"数学": 100,
"英语": 100
}, {
"语文": 100,
"数学": 100,
"物理": 100
}, {
"英语": 100,
"化学": 100
}, ]
let newArr = [],
obj = {};

arr.forEach(item => {
for(let key in item) {
let value = item[key];
key in obj ? (obj[key] += value) : (obj[key] = value)

}

})
//遍历对象转为数组
for(let i in obj) {
let o = {};
o[i] = obj[i];
newArr.push(o)
}
console.log(newArr)

[js] 对象数组key值相等value相加_ecmascript


​​js对象数组key值相等value相加​​


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