Angular - Reactive Forms
Which Angular validator checks if the input matches a specific regular expression pattern?
Which Angular validator checks if the input matches a specific regular expression pattern?
easy🧠 Conceptual Q1 of 15
Step-by-Step Solution
Solution:
Step 1: Understand validator purposes
Validators.pattern is used to check if input matches a regex pattern.Step 2: Compare with other validators
Validators.minLength checks length, Validators.required checks presence, maxLength limits length.Final Answer:
Validators.pattern -> Option CQuick Check:
Pattern validator = Validators.pattern [OK]
Quick Trick: Pattern validator uses regex to match input [OK]
Common Mistakes:
MISTAKES- Confusing pattern with minLength
- Using required instead of pattern
- Mixing maxLength with pattern
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