HTML Input Types - W3Schools
The <input type="url"> is used for input fields that should contain a URL address. Depending on browser support, the url field can be automatically validated when submitted.
HTML Forms - W3Schools
The <form> element is a container for different types of input elements, such as: text fields, checkboxes, radio buttons, submit buttons, etc. All the different form elements are covered in this chapter: HTML …
HTML Form Elements - W3Schools
The <input> Element One of the most used form elements is the <input> element. The <input> element can be displayed in several ways, depending on the type attribute.
HTML input tag - W3Schools
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HTML input type Attribute - W3Schools
Definition and Usage The type attribute specifies the type of <input> element to display. If the type attribute is not specified, the default type is "text".
HTML Input Attributes - W3Schools
The input required attribute specifies that an input field must be filled out before submitting the form. The required attribute works with the following input types: text, search, url, tel, email, password, date …
HTML form tag - W3Schools
Definition and Usage The <form> tag is used to create an HTML form for user input. The <form> element can contain one or more of the following form elements: <input> <textarea> <button> …
HTML Input form* Attributes - W3Schools
This chapter describes the different form* attributes for the HTML <input> element.
HTML Form Attributes - W3Schools
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HTML input type="radio" - W3Schools
The <input type="radio"> defines a radio button. Radio buttons are normally presented in radio groups (a collection of radio buttons describing a set of related options).