Which attribute is commonly used with the <input> tag?

The attribute that is commonly used with the <input> tag is "type." This attribute is essential because it specifies the kind of input element to be created, such as a text box, radio button, checkbox, password field, or others. Each type influences both the user interface presented to the user and the data that can be submitted with the form. For example, setting the type to "text" creates a standard text field for user input, while setting it to "checkbox" generates a checkbox that users can select or deselect.

Using the "type" attribute is critical for ensuring that forms behave as expected and that users provide the correct type of data. Other attributes like "alt," "style," and "src" do not serve the same purpose for the <input> tag. "alt" is typically utilized with images, "style" affects the CSS presentation, and "src" is used primarily in the <img> tag to specify the source of an image. Therefore, "type" is the most relevant and commonly used attribute with the <input> tag.