You no longer need to enclose attribute values ​​in HTML5 with quotation marks?

Question

I am trying to learn HTML5, and I saw some tutorials that do something like:

<input type=email> 

And I noticed that it is different from XHTML, where most values ​​(if not all) should be enclosed in quotation marks.

Will it have any future things that I should be careful about?

Answer 1

I refer you to the specification: http://www.w3.org/TR/html5/syntax.html#attributes-0

Attributes can be specified in four different ways:

• Syntax Empty Attributes
• The syntax of a value without quotes
• Quotation syntax value syntax
• Double-quoted Attribute Value Syntax

Answer 2

HTML never required quoting attribute values ​​(this is optional). XHTML always required the value of quoted attributes. HTML5 continues this tradition.