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Which of the following is the correct way to add a minimum length validation of 5 characters to an input in Angular template-driven forms?

easy📝 Syntax Q3 of 15
Angular - Template-Driven Forms
Which of the following is the correct way to add a minimum length validation of 5 characters to an input in Angular template-driven forms?
A<input minlength="5" name="username" ngModel>
B<input minLength="5" name="username" ngModel>
C<input min_length="5" name="username" ngModel>
D<input min-length="5" name="username" ngModel>
Step-by-Step Solution
Solution:

  1. Step 1: Check Angular template attribute syntax

    The correct attribute is minlength all lowercase, no underscores or dashes.

  2. Step 2: Verify attribute spelling and casing

    Angular uses HTML standard attributes, so minlength is correct, others are invalid.

  3. Final Answer:

    <input minlength="5" name="username" ngModel> -> Option A

  4. Quick Check:

    minlength attribute = minimum characters [OK]
Quick Trick: Use lowercase 'minlength' attribute for min length validation [OK]
Common Mistakes:
MISTAKES
  • Capitalizing 'minLength' instead of 'minlength'
  • Using underscores or dashes in attribute names
  • Confusing Angular directive syntax with HTML attributes

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