Since fetch() returns a promise, we can use the catch method of the promise to intercept any error occurring during the execution of the request, and the processing done in the then callbacks:
fetch('./file.json')
.then(response => {
//...
})
.catch(err => console.error(err))
Another way of catching errors is to manage them in the first then:
fetch('./file.json')
.then(response => {
if (!response.ok) { throw Error(response.statusText) }
return response
})
.then(response => {
//...
})
Lessons in this unit:
| 0: | Introduction |
| 1: | How to use Fetch |
| 2: | ▶︎ Catching errors in network requests |
| 3: | The Response object |
| 4: | Getting the body content |
| 5: | The Request object |
| 6: | Request headers |
| 7: | POST requests |
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