[Solved] Identify the error in this Angular animation trigger definition:trigger('fade', [ state('visible', style({ opacity: 1 })), state('hidden', style({ opacity:... | Angular

Angular - Animations

Identify the error in this Angular animation trigger definition:

trigger('fade', [
  state('visible', style({ opacity: 1 })),
  state('hidden', style({ opacity: 0 })),
  transition('visible <=> hidden', animate('500ms')),
  transition('hidden => visible', animate('fast'))
])

Astyle() function is missing in states

BMissing quotes around state names

CTransitions cannot use '<=>' syntax

DThe 'fast' duration is invalid in animate()

Step-by-Step Solution

Solution:

Step 1: Check animate() duration values
Angular animate() requires duration in time units like '500ms' or '1s'. 'fast' is not valid.
Step 2: Verify other parts
State names have quotes, transitions use valid '<=>' syntax, and style() is used correctly.
Final Answer:
The 'fast' duration is invalid in animate() -> Option D
Quick Check:
animate() needs valid time units, not 'fast' [OK]

Quick Trick: Use time units like 'ms' or 's' in animate() durations [OK]

Common Mistakes:

Using words like 'fast' instead of time units
Forgetting quotes around state names
Misusing transition syntax

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More Angular Quizzes

Identify the error in this Angular animation trigger definition:

Step 1: Check animate() duration values

Step 2: Verify other parts

Final Answer:

Quick Check:

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