Angular - Signals
You want to create a computed signal that returns the full address from multiple signals: street, city, and zip. Which code correctly implements this?
You want to create a computed signal that returns the full address from multiple signals: street, city, and zip. Which code correctly implements this?
hard📝 component behavior Q8 of 15
Step-by-Step Solution
Solution:
Step 1: Use computed with a function returning combined string
The computed signal must be created with a function that calls each signal to get current values.Step 2: Check each option for correct syntax
const fullAddress = computed(() => `${street()} ${city()} ${zip()}`); correctly uses computed with a template string and calls each signal. Others misuse signal or omit function calls.Final Answer:
const fullAddress = computed(() => `${street()} ${city()} ${zip()}`); -> Option DQuick Check:
Combine signals inside computed with calls and template string [OK]
Quick Trick: Use computed with () calls and template strings for combined values [OK]
Common Mistakes:
- Concatenating signals without calling them
- Using signal() instead of computed() for derived values
- Passing computed argument without a function
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