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Aprenda Working with process | Running Code and Working with the Node Environment
Node.js Foundations

bookWorking with process

When you run Node.js programs, you gain access to a powerful global object called process. This object gives you detailed information and control over the current Node.js process. The process object is available everywhere in your code without needing to require or import anything.

Two of the most commonly used properties of process are process.argv and process.env.

  • process.argv is an array containing the command-line arguments passed when launching your Node.js program. The first element is the path to the Node.js executable, the second is the path to your script, and the rest are any additional arguments you provide;
  • process.env is an object that stores the environment variables available to your process. You can use this to read configuration values, secrets, or other information set outside your code.

Understanding how to use these properties lets you make your programs more flexible and configurable.

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The process object has many other useful properties and methods. For example, process.exit() lets you end your program immediately with a specific exit code, which can be helpful for signaling success or failure to other programs or scripts.

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Which of the following statements about the Node.js process object are correct?

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Seção 2. Capítulo 3

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bookWorking with process

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When you run Node.js programs, you gain access to a powerful global object called process. This object gives you detailed information and control over the current Node.js process. The process object is available everywhere in your code without needing to require or import anything.

Two of the most commonly used properties of process are process.argv and process.env.

  • process.argv is an array containing the command-line arguments passed when launching your Node.js program. The first element is the path to the Node.js executable, the second is the path to your script, and the rest are any additional arguments you provide;
  • process.env is an object that stores the environment variables available to your process. You can use this to read configuration values, secrets, or other information set outside your code.

Understanding how to use these properties lets you make your programs more flexible and configurable.

index.js

index.js

copy
Note
Study more

The process object has many other useful properties and methods. For example, process.exit() lets you end your program immediately with a specific exit code, which can be helpful for signaling success or failure to other programs or scripts.

question mark

Which of the following statements about the Node.js process object are correct?

Select the correct answer

Tudo estava claro?

Como podemos melhorá-lo?

Obrigado pelo seu feedback!

Seção 2. Capítulo 3
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