Question

Use HTML5 validation attributes to ensure the entered age is between 21 and 99, inclusive, and the user name is 20 characters or less. 1 User Age:

User Name:

Answer 1

To ensure the entered age is between 21 and 99, inclusive, and the user name is 20 characters or less, you can use the following HTML5 validation attributes:

```html

<input type="number" name="userAge" id="userAge" required min="21" max="99">

<input type="text" name="userName" id="userName" required maxlength="20">

```

Step-by-step explanation:

The first input field for age uses the `type="number"` attribute to indicate that only numeric input is allowed. The `min` and `max` attributes set the minimum and maximum allowed values, ensuring the entered age is between 21 and 99, inclusive. The `required` attribute ensures that the user must enter a value.

The second input field for the user name uses `type="text"` to allow alphanumeric characters. The `maxlength` attribute limits the input to 20 characters. The `required` attribute ensures that a name is entered.

By combining these attributes, the HTML5 form will validate the user's input on the client side, providing instant feedback to the user and preventing submission of the form unless the specified conditions are met.

In summary, this HTML code creates an input form with built-in validation to ensure the entered age is between 21 and 99, inclusive, and the user name is 20 characters or less. This client-side validation enhances user experience by preventing invalid data entry before submission.

Answer 2

Here's an HTML form with input fields for user age and name, including HTML5 validation attributes to restrict the age between 21 and 99 and the username to 20 characters or less:

The HTML Form

<form>

<label for="userAge">User Age:</label>

<input type="number" id="userAge" name="userAge" min="21" max="99" required><br><br>

<label for="userName">User Name:</label>

<input type="text" id="userName" name="userName" maxlength="20" required><br><br>

<input type="submit" value="Submit">

</form>

The userAge input field is of type "number" with a minimum value of 21 and a maximum value of 99 using the min and max attributes.

The userName input field is of type "text" and has a maxlength attribute set to 20 to limit the username to 20 characters or less.

Both input fields have the required attribute, which ensures that they must be filled in before submitting the form.

This form will prompt users to enter their age within the specified range and a username of up to 20 characters.