Jul 11, 2025 · A boolean attribute in HTML is an attribute that represents true or false values. If an HTML tag contains a boolean attribute — no matter the value of that attribute — the attribute is …

There are Boolean attributes in HTML and, unless I err somewhere, there are two dozen of them. Here’s a quick rundown of what makes for a Boolean attribute, and what Boolean attributes …

Jul 3, 2020 · Summary You can set a boolean attribute in one of three ways: Omit the value (e.g. required) Use an empty string (e.g. required="") Use the name of the attribute itself (e.g. …

Nov 9, 2010 · A number of attributes are boolean attributes. The presence of a boolean attribute on an element represents the true value, and the absence of the attribute represents the false …

6 days ago · Some content attributes (e.g., required, readonly, disabled) are called boolean attributes. If a boolean attribute is present, its value is true, and if it's absent, its value is false.

Jul 11, 2025 · A boolean attribute in HTML is an attribute that represents true or false values. If an HTML tag contains a boolean attribute — no matter the value of that attribute — the attribute is …

Boolean algebra In mathematics and mathematical logic, Boolean algebra is a branch of algebra. It differs from elementary algebra in two ways. First, the values of the variables are the truth …

2 days ago · A number of attributes are boolean attributes. The presence of a boolean attribute on an element represents the true value, and the absence of the attribute represents the false value.

Oct 7, 2023 · A number of attributes are boolean attributes. The presence of a boolean attribute on an element represents the true value, and the absence of the attribute represents the false …

Learn HTML custom data (data-*) and boolean attributes. Understand how to use them for dynamic behavior, element state, and cleaner web development.