* A function that creates an event handler for the `error` event. * @param {EventCallback} callback A function called to handle the error context. * @returns {EventHandler} A handler for the `error` event. */ function createErrorHandler(callback) {
时间: 2024-04-08 16:29:36 浏览: 40
error handler
Sure! Here's an example of a function that creates an event handler for the `error` event:
```javascript
function createErrorHandler(callback) {
const errorHandler = (error) => {
callback(error);
};
return errorHandler;
}
```
This function takes a `callback` function as a parameter, which will be called to handle the error context. It creates an `errorHandler` function that simply calls the `callback` function with the `error` as an argument.
You can use this `createErrorHandler` function to create an event handler for the `error` event like this:
```javascript
const handleError = createErrorHandler((error) => {
console.error('An error occurred:', error);
});
// Attach the event handler to an error event
someEventEmitter.on('error', handleError);
```
In this example, `handleError` is the event handler that will be called whenever an `error` event is emitted by `someEventEmitter`. It will then call the provided `callback` function, which in this case logs the error to the console.
Please let me know if you need any further assistance!
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