veebivormi

Veebivorm, in Estonian, refers to an online form embedded in a webpage that is used to collect information from users. In practice, a veebivorm is implemented with the HTML form element and a set of controls such as text inputs, checkboxes, radio buttons, selects, and textareas. When submitted, the form sends data to a server endpoint specified by the form's action attribute using a method usually GET or POST, with data encoded as application/x-www-form-urlencoded by default or multipart/form-data for file uploads.

A typical veebivorm includes labels for each control, consistent grouping with fieldset and legend, and accessible error messaging. HTML5 provides built-in validation attributes (required, type, minlength, pattern) that offer client-side checks; JavaScript may enhance validation and dynamic field behavior. Accessibility considerations emphasize associating labels with inputs, ensuring keyboard operability, and providing clear feedback for invalid entries.

Security and privacy are important for veebivorms. Server-side validation and sanitization are essential, as client-side checks can be bypassed. Anti-CSRF measures, proper handling of user input, and minimization of data exposure help protect against common threats. Privacy considerations include limiting the data collected to what is necessary and securing transmitted data (for example, via HTTPS).

Common usage includes contact forms, registration and login forms, surveys, order forms, and feedback forms. Development considerations for veebivorms include progressive enhancement, accessibility, performance, and cross-browser compatibility; modern frameworks and libraries can provide dynamic validation and conditional fields while preserving basic functionality for users with JavaScript disabled.