Bootstrap 5 Forms Fundamentals: Inputs, Dropdowns, and Validation Tips

This article introduces Bootstrap 5 form development, which offers advantages such as rapid beautification, responsive layout, and reduced style code, making it suitable for beginners. The core content includes: basic input fields implemented using the form-label and form-control classes, supporting various types such as text, password, and email, with the need to associate id and for attributes. Dropdown menus are divided into basic ones (using the form-select class) and multi-select ones (from the dropdown series, requiring JavaScript). Form validation utilizes HTML5's required attribute to mark mandatory fields, the type attribute to check format, and is combined with is-valid/invalid classes to display feedback. It also provides comprehensive examples (multi-column layout, validation rules) and methods to introduce Bootstrap (CSS + JS), facilitating the quick construction of fully functional forms.