nnot bind an API on top of an existing property on the window object
时间: 2024-02-15 20:05:12 浏览: 55
这个错误通常出现在使用 `contextBridge.exposeInMainWorld` 方法时,试图将一个 API 绑定到 `window` 对象上已经存在的属性上。
例如,如果你这样写:
```
contextBridge.exposeInMainWorld('window', {
myApi: myApi
});
```
这个方法会试图将一个名为 `myApi` 的 API 绑定到 `window` 对象上。但是,如果 `window.myApi` 已经存在,就会出现这个错误。
为了解决这个问题,你可以将 API 绑定到一个自定义的对象上,而不是 `window` 对象。例如:
```
contextBridge.exposeInMainWorld('myCustomObject', {
myApi: myApi
});
```
这样,你就可以在前端代码中使用 `window.myCustomObject.myApi` 来访问这个 API,而不会与现有的 `window` 属性冲突。
相关问题
nnot read properties of undefined (reading 'commitProxy')
It looks like you are trying to access the property 'commitProxy' on an undefined object. This error typically occurs when you attempt to access a property or call a method on an object that is null or undefined.
To resolve this issue, you should verify that the object you are trying to access is defined and not null. You can use conditional statements or optional chaining (?.) to safely access properties on potentially undefined objects.
For example, you can modify your code like this:
```javascript
if (myObject && myObject.commitProxy) {
// Access the commitProxy property
} else {
// Handle the case when myObject or commitProxy is undefined
}
```
Alternatively, you can use optional chaining to access the property:
```javascript
const commitProxy = myObject?.commitProxy;
```
This way, if myObject is undefined, the expression will return undefined instead of throwing an error.
nnot read properties of undefined (reading 'prototype')
This error typically occurs when you attempt to read properties of an undefined value. In this case, it seems like you are trying to access the `prototype` property of an undefined object.
To fix this error, you should first ensure that the object you are trying to access is defined and not null. You can use conditional statements or null/undefined checks to handle such cases and avoid accessing properties on undefined values.
Here's an example of how you can handle this error:
```javascript
if (myObject && myObject.prototype) {
// Access properties or methods on myObject.prototype here
} else {
// Handle the case when myObject is undefined or null
}
```
Make sure to check the code where this error is occurring and verify if you are properly initializing or assigning values to the object before accessing its properties.