HTMLautocompleteattribuut

HTML autocomplete is a feature of web forms that allows browsers to offer or automatically fill previously entered data into form controls. It aims to speed up repetitive data entry while giving users control over what is stored and suggested.

The autocomplete attribute can be applied to form elements such as form, input, select, textarea, and button. It accepts the values on and off, plus a set of data-type tokens that describe the kind of information the control handles. Common tokens include name, given-name, family-name, email, street-address, address-line1, address-line2, city, region, postal-code, country, tel, username, current-password, and new-password. Some implementations also recognize section- tokens to group related fields and one-time-code for codes sent via SMS.

Example:

<form autocomplete="on">

<input type="text" name="firstName" autocomplete="given-name">

<input type="text" name="lastName" autocomplete="family-name">

<input type="email" name="email" autocomplete="email">

<input type="password" name="password" autocomplete="new-password">

</form>

Usage considerations include security and privacy. Autocomplete data is stored by the browser and may be available on the device even after the site is closed. Users on shared devices may prefer to disable autofill for sensitive fields or entire forms by using autocomplete="off" on the form or specific controls, though some browsers may treat password fields differently. Using appropriate tokens improves compatibility with password managers and autofill utilities, aiding accessibility and convenience while maintaining user control. Overall, when used thoughtfully, HTML autocomplete enhances user experience without compromising security.