| Attribute | HTML4.01 | XHTML1.0 | XHTML | Value | ||||
| S | T | F | S | T | F | 1.1 | ||
| id | ● | ● | ● | ● | ● | ● | ● | 固有の拡張子 |
| class | ● | ● | ● | ● | ● | ● | ● | 分類名 |
| title | ● | ● | ● | ● | ● | ● | ● | 文字列 |
| style | ● | ● | ● | ● | ● | ● | × | CSS |
子要素として持てる要素は、ヘッダ部で使用する要素を除くすべての要素
| Attribute | HTML4.01 | XHTML1.0 | XHTML | Value | ||||
| S | T | F | S | T | F | 1.1 | ||
| action | ● | ● | ● | ● | ● | ● | ● | URI |
| mathod | ● | ● | ● | ● | ● | ● | ● | HTTP method |
| enctype | ● | ● | ● | ● | ● | ● | ● | MIMEタイプ |
| accept-charset | ● | ● | ● | ● | ● | ● | ● | 文字符号コード |
| accept | ● | ● | ● | ● | ● | ● | ● | MIMEタイプ |
| name | × | ● | ● | ● | × | ● | × | 名前 |
| target | × | ● | ● | ● | × | ● | × | フレーム名 |
| id | ● | ● | ● | ● | ● | ● | ● | 固有の拡張子 |
| class | ● | ● | ● | ● | ● | ● | ● | 分類名 |
| title | ● | ● | ● | ● | ● | ● | ● | 文字列 |
| style | ● | ● | ● | ● | ● | ● | × | CSS |
子要素として持てる要素は、ヘッダ部で使用する要素を除くすべての要素