数组对象去重

let result = []
let objT = {}
for (var i = 0; i < Obj.value.planCode.length; i++) {
if (!objT[Obj.value.planCode[i].key]) {
result.push(Obj.value.planCode[i]);
objT[Obj.value.planCode[i].key] = true;
}
}
Obj.value.planCode = result