What is the recommended approach for logging asynchronous operations using console.log()? | JavaScript | MYTAT

Q

What is the recommended approach for logging asynchronous operations using console.log()?

A). Use separate console.log() statements for each asynchronous operation. B). Include all asynchronous logs within a single console.log() statement. C). Disable logging for asynchronous operations. D). Use console.error() for all asynchronous logs.

Answer & Solution

Answer: Option Option A

Solution:

The recommended approach for logging asynchronous operations using console.log() is to use separate console.log() statements for each asynchronous operation. Since asynchronous operations may have varying execution times and order, logging them separately ensures that each operation's output is captured and displayed correctly in the console. Including all asynchronous logs within a single console.log() statement may not provide clear visibility or accurate sequencing of asynchronous events, while disabling logging or using console.error() for all asynchronous logs is not suitable for general logging and monitoring of asynchronous operations. It is best to log asynchronous operations individually for better tracking and debugging of asynchronous code in JavaScript.

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Which method can be used to log warning messages in JavaScript?

A). console.debug()

B). console.info()

C). console.warn()

D). console.error()

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How can you include JavaScript expressions in console.log() messages?

A). By enclosing expressions in backticks (`) within the message string.

B). By using special symbols like %s and %d.

C). By wrapping expressions in square brackets [].

D). By assigning expressions to separate log methods.

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What type of information can be logged using console.log() in JavaScript?

A). Only strings and text-based data.

B). Strings, numbers, objects, arrays, and other data types.

C). Numbers and mathematical calculations.

D). Images and multimedia content.

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How can you format log messages using console.log() to include variable values or expressions?

A). By using special symbols like %s and %d in the message string.

B). By enclosing expressions in backticks (`) within the message.

C). By concatenating variables directly in the parentheses.

D). By assigning expressions to separate log methods.

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Which approach is recommended for logging sensitive data using console.log()?

A). Use console.warn() instead of console.log().

B). Use console.log() with encryption algorithms.

C). Avoid logging sensitive data altogether.

D). Use console.error() instead of console.log().

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What is the purpose of using console.log() for debugging JavaScript code?

A). To optimize code execution.

B). To log errors and exceptions.

C). To display messages to users.

D). To track variables, values, and program flow.

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How is console.log() used to display variable values in the console?

A). By concatenating variables with strings.

B). By using special escape characters.

C). By including variables directly in the parentheses.

D). By using HTML tags.

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How does console.log() impact the accessibility of a webpage?

A). It improves accessibility by providing interactive elements.

B). It has no impact on accessibility.

C). It may negatively impact accessibility for users with disabilities.

D). It optimizes page performance for accessibility features.

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Which statement accurately describes the behavior of console.log() in JavaScript?

A). It halts script execution until the log is displayed.

B). It continues script execution while logging to the console.

C). It executes in parallel with other statements in the script.

D). It pauses script execution while logging to the console.

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What does console.log() output when logging an undefined variable?

A). An empty string.

B). 'undefined'

C). null

D). An error message.

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