This topic created in 1320 days ago, the information mentioned may be changed or developed.
代码如下：
XXX.specs.item.type === "array"
? XXXX
: [];
报错：Property 'item' does not exist on type 'stringDateType | numberDateType | arrDateType | structDateType'. Property 'item' does not exist on type 'stringDateType'.
XXX: {
specs:
| stringDateType
| numberDateType
| arrDateType
| structDateType
| booleanDateType;
type:
| "int"
| "int8"
| "int16"
| "int32"
| "int64"
| "bool"
| "string"
| "float"
| "double"
| "array"
| "struct"
| "其他"
| unknown;
};
XXX.specs.item.type === "array"
? XXXX
: [];
报错：Property 'item' does not exist on type 'stringDateType | numberDateType | arrDateType | structDateType'. Property 'item' does not exist on type 'stringDateType'.
XXX: {
specs:
| stringDateType
| numberDateType
| arrDateType
| structDateType
| booleanDateType;
type:
| "int"
| "int8"
| "int16"
| "int32"
| "int64"
| "bool"
| "string"
| "float"
| "double"
| "array"
| "struct"
| "其他"
| unknown;
};
 |
1
Lqxc Sep 14, 2022 via Android
还需要点上下文
|
 |
2
cyrbuzz Sep 14, 2022
XXX.specs?.item?.type === 'array'。
|
 |
3
IvanLi127 Sep 14, 2022
要么你得先在前面加判断，判断出是 `XXX.specs` 是 `booleanDateType`；要么直接把 `XXX.specs` 强转成 `booleanDateType`。
|
 |
4
lovedebug Sep 14, 2022
你这是在操作类型啊，不是值
|
 |
5
Leviathann Sep 14, 2022
stringDateType 怎么定义的？
|
 |
6
renmu Sep 14, 2022 via Android
//@ts-ignore
|
 |
7
Balibabo Sep 14, 2022
```
x?.x?.x?.item ``` 可解 99% 的 not exist 问题 |
 |
8
particlec OP const arr = XXX.specs as ArrDateType;定死类型就行了
|
 |
9
PerFectTime Sep 14, 2022
//@ts-ignore
手动狗头 |
Select Language