Q
How can you log messages with different log levels using console.log()?

Answer & Solution

Answer: Option Option B
Solution:
You can log messages with different log levels using console.log() by passing a log level as an argument to the method. While console.log() itself is a generic logging method, it can be extended to handle different log levels (such as debug, info, warn, error) by including a log level as an argument. For example, console.log('[INFO]', 'This is an informational message.'); will log an informational message with the '[INFO]' prefix, distinguishing it as an info-level log. This approach allows developers to differentiate log levels within console.log() statements without using separate methods or conditional statements for each log level, improving logging organization and readability.
Related Questions on Average

How can you log multiple values or messages using console.log()?

A). By using separate console.log() statements for each value.

B). By concatenating values within the parentheses.

C). By using HTML tags in the message string.

D). By separating values with commas within the parentheses.

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.

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.

How can you log formatted messages with variable values using console.log()?

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.

How does console.log() affect the performance of a webpage?

A). It improves page loading speed.

B). It has no impact on page performance.

C). It may slightly degrade performance if used excessively.

D). It optimizes JavaScript execution.

How can you improve the readability of log messages in console.log()?

A). By including detailed error messages.

B). By using clear and descriptive message content.

C). By logging messages in reverse order.

D). By including HTML tags for styling.

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.

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.

How does console.log() handle logging complex data structures like objects or arrays?

A). It prints the memory address of the data structure.

B). It converts objects and arrays into readable string representations.

C). It displays an error message for complex data structures.

D). It ignores complex data structures and logs a warning.

What is the recommended approach for handling console logs in production code?

A). Disable all console logs in production code.

B). Include detailed console logs for all scenarios.

C). Use conditional logging and minimize excessive logging.

D). Log all errors and exceptions using console.error().