HTML5 allows four different syntaxes for attributes. This example demonstrates the different syntaxes used in an <input> tag:
| Type | Example |
|---|---|
| Empty | <input type="text" value="John" disabled> |
| Unquoted | <input type="text" value=John> |
| Double-quoted | <input type="text" value="John Doe"> |
| Single-quoted | <input type="text" value='John Doe'> |
In HTML5, all four syntaxes may be used, depending on what is needed for the attribute.
