如:
// arr为初始数组,key为需要处理的key名称
unique (arr, key) {
var tempArr = []
var newArr = []
for (let i = 0; i < arr.length; i++) {
if (tempArr.indexOf(arr[i][key]) === -1) {
newArr.push({
name: arr[i].name,
activity: arr[i].activity
})
tempArr.push(arr[i][key]);
} else {
for (let j = 0; j < newArr.length; j++) {
if (newArr[j][key] == arr[i][key]) {
newArr[j].activity = newArr[j].activity.concat(arr[i].activity)
}
}
}
}
return newArr
}
输出: