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What does the signal function do in Angular?

easy📝 Conceptual Q11 of 15
Angular - Signals
What does the signal function do in Angular?
ARegisters a service for dependency injection
BDefines a new Angular component
CCreates a reactive value that can be read and updated
DStarts an HTTP request
Step-by-Step Solution
Solution:
  1. Step 1: Understand the purpose of signal

    The signal function is used to create reactive values that Angular tracks for changes.
  2. Step 2: Identify what signal does

    It creates a value container that can be read by calling it and updated to trigger UI changes.
  3. Final Answer:

    Creates a reactive value that can be read and updated -> Option C
  4. Quick Check:

    Signal creation = reactive value container [OK]
Quick Trick: Remember: signal() creates reactive values you can read and update [OK]
Common Mistakes:
  • Confusing signal with component or service creation
  • Thinking signal starts HTTP requests
  • Assuming signal is for styling or templates

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