minlength

The HTML minlength attribute sets the minimum number of characters required in an input field, ensuring users provide a certain length of input before submitting the form.

minlength attribute

The minlength attribute in HTML specifies the minimum character length required for an <input> or <textarea> element before a form can be submitted. It is used with input types such as text, email, search, password, tel, and url to ensure the input meets length or strength requirements.

Syntax

index.html

<input type="text" minlength="value">

value

The least number of characters needed.

Example

Password (min 8 characters):

index.html

<label for="password">Password (min 8 characters):</label>
<input type="password" id="password" name="password" minlength="8">

Definition and Usage

The minlength attribute defines the minimum number of characters required in an input field.

The minlength attribute can be applied to <input> elements with types: text, search, url, tel, email, and password.

Key Points

Error Display: In some browsers, an error message is shown if the input doesn't meet the minimum character requirement.
Optional Fields: The minlength attribute doesn't force the field to be mandatory; an empty field is acceptable unless it's marked as required.

Conclusion

The minlength attribute ensures that users input a minimum number of characters before submitting a form. It is commonly used for fields like passwords and emails to enforce basic input requirements. This attribute helps maintain data integrity and provides better validation for user inputs.

min

The HTML min attribute establishes the minimum value allowed for an input element, such as a number or date, ensuring the input meets a defined lower limit.

multiple

The HTML multiple attribute allows users to select more than one file or option from a list, enabling multiple selections in file uploads or dropdown inputs.