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Asynchronous code is a fundamental part of JavaScript, allowing you to perform operations like fetching data from a server, reading files, or waiting for timers without blocking the rest of your program. In JavaScript, asynchronous behavior is commonly handled using callbacks, promises, or the modern async/await syntax. Unlike synchronous code, where you get results right away, asynchronous functions might take some time to complete, so their results are not available immediately. This timing difference means you need special techniques to test asynchronous code properly: your tests must wait for the async operations to finish before making assertions, or you could end up with false positives or negatives.

test.js

test.js

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1. What is a common reason for needing special handling when testing asynchronous code?

2. Which Jest feature helps you test functions that return promises or use async/await?

question mark

What is a common reason for needing special handling when testing asynchronous code?

Select the correct answer

question mark

Which Jest feature helps you test functions that return promises or use async/await?

Select the correct answer

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Asynchronous code is a fundamental part of JavaScript, allowing you to perform operations like fetching data from a server, reading files, or waiting for timers without blocking the rest of your program. In JavaScript, asynchronous behavior is commonly handled using callbacks, promises, or the modern async/await syntax. Unlike synchronous code, where you get results right away, asynchronous functions might take some time to complete, so their results are not available immediately. This timing difference means you need special techniques to test asynchronous code properly: your tests must wait for the async operations to finish before making assertions, or you could end up with false positives or negatives.

test.js

test.js

copy

1. What is a common reason for needing special handling when testing asynchronous code?

2. Which Jest feature helps you test functions that return promises or use async/await?

question mark

What is a common reason for needing special handling when testing asynchronous code?

Select the correct answer

question mark

Which Jest feature helps you test functions that return promises or use async/await?

Select the correct answer

Var alt klart?

Hvordan kan vi forbedre det?

Tak for dine kommentarer!

Sektion 2. Kapitel 4
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