Angular - Reactive Forms
Which of the following is the correct syntax to check if a form control named
username is valid in Angular template-driven forms?Which of the following is the correct syntax to check if a form control named username is valid in Angular template-driven forms?
easy📝 Syntax Q3 of 15
Step-by-Step Solution
Solution:
Step 1: Identify template-driven form control reference
In template-driven forms, the control variable (e.g., #username="ngModel") exposes the 'valid' property directly.Step 2: Compare options
username.validuses the control variable directly, which is correct.form.controls.username.validandform.get('username').validare reactive form syntax.usernameControl.isValiduses a non-existent property.Final Answer:
username.valid -> Option AQuick Check:
template-driven valid check = username.valid [OK]
Quick Trick: Use control variable's valid property in template-driven forms [OK]
Common Mistakes:
MISTAKES- Using reactive form syntax in template-driven forms
- Using isValid instead of valid
- Accessing controls property incorrectly
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