HTML Form Validation

Question 1

Required Attribute

Answer 1

Fields in our forms which are not optional

Ex:

<input type=”–” required”>

Question 2

Text Length

Answer 2

Attributes:
minlength & maxlength

Ex:

<input></input>

Question 3

Pattern

Answer 3

For cases when we want user input to follow specific guidelines, we use the pattern attribute and assign it a regular expression, or regex. Regular expressions are a sequence of characters that make up a search pattern. If the input matches the regex, the form can be submitted.

Ex:

<input type=”number” pattern=”[0-9] {14, 16}”