[Solved] Identify the error in this Angular form control validator setup:new FormControl('', [Validators.required, Validators.pattern('[a-zA-Z]+')) | Angular

Angular - Reactive Forms

Identify the error in this Angular form control validator setup:

new FormControl('', [Validators.required, Validators.pattern('[a-zA-Z]+'))

AMissing closing parenthesis for Validators.pattern

BPattern string should be a RegExp object, not a string

CValidators.required cannot be combined with Validators.pattern

DNo error, this setup is correct

Step-by-Step Solution

Solution:

Step 1: Check syntax of Validators.pattern
The pattern validator call has an opening parenthesis but is missing the closing parenthesis at the end.
Step 2: Verify other options
Pattern can accept a string, and required can be combined with pattern, so options B and C are incorrect.
Final Answer:
Missing closing parenthesis for Validators.pattern -> Option A
Quick Check:
Unmatched parentheses cause syntax error [OK]

Quick Trick: Count parentheses carefully in validator calls [OK]

Common Mistakes:

MISTAKES

Master "Reactive Forms" in Angular

9 interactive learning modes - each teaches the same concept differently

More Angular Quizzes

Identify the error in this Angular form control validator setup: