How Can I Customize HTML Form Error Messages for a Better User Experience?

Custom Error Messages for HTML Forms

When submitting a form without filling required fields, browsers typically display generic error messages like "Please fill out this field." To enhance the user experience, you can customize these messages to provide more specific and helpful feedback.

Username Field

To customize the username field's error message, use the oninvalid attribute. This attribute specifies the custom message to be displayed when the field does not meet its validation criteria, which is the required attribute in this case.

<input type="text">

Password Field

To customize the password field's error message, use the oninvalid attribute and set its value to an empty string. This hides the * message that appears when the field is blank or contains only asterisks.

<input type="password" name="pass" placeholder="Password" required
       oninvalid="this.setCustomValidity('')"
       oninput="this.setCustomValidity('')" />

The oninput attribute is crucial as it resets the custom error message once the user starts typing in the field, allowing the browser to display the default error message if the field is left blank.

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