Boolean attributes are true when present and false when absent. Their value is the presence of the attribute itself.
In this FullStack Masterclass lesson, Andrew explains HTML Boolean Attributes as part of the HTML Attributes chapter.
You will learn:
Boolean attributes are controlled by presence
disabled prevents normal interaction
checked and selected set default choice
readonly allows reading but not editing
multiple allows more than one value
Chapters:
00:00 HTML Boolean Attributes
00:16 What You Will Learn
00:29 Presence Is the Value
00:46 Boolean Attribute Vocabulary
01:08 Write Clean Boolean Attributes
01:24 Disabled and Readonly Are Different
01:38 Checked and Selected Set Defaults
01:52 Multiple and Autofocus Need Intent
02:08 Boolean True and False
02:21 Production Boolean Rules
02:37 Try It Yourself
02:51 Boolean Attributes Recap
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