Notice: This page requires JavaScript to function properly.
Please enable JavaScript in your browser settings or update your browser.
Aprenda Avoiding Race Conditions | Debugging and Best Practices for Asynchronous Code
Asynchronous JavaScript Explained

bookAvoiding Race Conditions

When working with asynchronous JavaScript, you often need to coordinate multiple operations that may complete in an unpredictable order. This can lead to race conditions, where the timing of asynchronous events causes your code to behave unpredictably or produce incorrect results. To avoid race conditions, you should always manage shared state carefully, ensure that asynchronous operations execute in the intended order, and use language features that help enforce predictable flow.

Start by identifying any points in your code where two or more asynchronous operations might read or write the same data. If you allow multiple asynchronous functions to update the same variable or resource without coordination, you risk one operation overwriting the changes of another, or reading stale data. Always use Promise combinators or async/await to explicitly control the order in which asynchronous tasks complete, especially when the result of one operation depends on another. Avoid updating shared state in multiple places unless you can guarantee the order of execution. When possible, encapsulate state within functions or objects, and avoid exposing it to outside modification during asynchronous work.

script.js

script.js

index.html

index.html

copy
question mark

What is a race condition?

Select the correct answer

Tudo estava claro?

Como podemos melhorá-lo?

Obrigado pelo seu feedback!

Seção 4. Capítulo 4

Pergunte à IA

expand

Pergunte à IA

ChatGPT

Pergunte o que quiser ou experimente uma das perguntas sugeridas para iniciar nosso bate-papo

Suggested prompts:

Can you give an example of a race condition in JavaScript?

What are some common Promise combinators I can use?

How can I refactor my code to avoid race conditions?

Awesome!

Completion rate improved to 3.57

bookAvoiding Race Conditions

Deslize para mostrar o menu

When working with asynchronous JavaScript, you often need to coordinate multiple operations that may complete in an unpredictable order. This can lead to race conditions, where the timing of asynchronous events causes your code to behave unpredictably or produce incorrect results. To avoid race conditions, you should always manage shared state carefully, ensure that asynchronous operations execute in the intended order, and use language features that help enforce predictable flow.

Start by identifying any points in your code where two or more asynchronous operations might read or write the same data. If you allow multiple asynchronous functions to update the same variable or resource without coordination, you risk one operation overwriting the changes of another, or reading stale data. Always use Promise combinators or async/await to explicitly control the order in which asynchronous tasks complete, especially when the result of one operation depends on another. Avoid updating shared state in multiple places unless you can guarantee the order of execution. When possible, encapsulate state within functions or objects, and avoid exposing it to outside modification during asynchronous work.

script.js

script.js

index.html

index.html

copy
question mark

What is a race condition?

Select the correct answer

Tudo estava claro?

Como podemos melhorá-lo?

Obrigado pelo seu feedback!

Seção 4. Capítulo 4
some-alt