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How can you safely update the hostname of an existing URL object without losing its path and query parameters?

hard📝 Application Q9 of 15
Node.js - URL and Query String Handling
How can you safely update the hostname of an existing URL object without losing its path and query parameters?
AAssign the new hostname to url.hostname property
BCreate a new URL with the new hostname and copy path and query manually
CModify url.href string directly
DUse url.setHostname(newHostname) method
Step-by-Step Solution
Solution:

  1. Step 1: Understand URL object properties

    URL objects allow direct assignment to hostname property to update host safely.

  2. Step 2: Evaluate other options

    Create a new URL with the new hostname and copy path and query manually is manual and error-prone; Modify url.href string directly is invalid as href is read-only string; Use url.setHostname(newHostname) method method does not exist.

  3. Final Answer:

    Assign the new hostname to url.hostname property -> Option A

  4. Quick Check:

    Update hostname by setting url.hostname [OK]
Quick Trick: Change hostname by setting url.hostname directly [OK]
Common Mistakes:
  • Trying to modify href string
  • Using non-existent methods
  • Rebuilding URL manually

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