determine whether the object in the array has an attribute of endTime, and if there is no endTime, add endTime as an empty string
let kingList = res.data.data.kingList
for (let i = 0; i < kingList.length; iPP) {
if(!kingList[i].endTime) {
// endTimekingList,
kingList[i]["endTime"] = kingList[i]
}
} return data
arr = arr.map (item = > (item.endTime? Item: Object.assign (item, {endTime:'})
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