[Solved] Identify the error in this code snippet:<input [(ngModel)]="userName">Component:export class ProfileComponent { userName: string; } | Angular

Angular - Template-Driven Forms

Identify the error in this code snippet:

<input [(ngModel)]="userName">

Component:

export class ProfileComponent {
  userName: string;
}

AuserName is not initialized, causing undefined binding

BMissing FormsModule import causes error

CIncorrect syntax for two-way binding

DNo error, code is correct

Step-by-Step Solution

Solution:

Step 1: Check property initialization
The property userName is declared but not initialized, so its value is undefined initially.
Step 2: Understand impact on binding
Binding to an undefined property causes the input to show empty initially, resulting in undefined binding.
Final Answer:
userName is not initialized, causing undefined binding -> Option A
Quick Check:
Uninitialized property leads to undefined binding [OK]

Quick Trick: Always initialize bound properties to avoid undefined [OK]

Common Mistakes:

MISTAKES

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