| Attribute | HTML4.01 | XHTML1.0 | XHTML | Value | ||||
| S | T | F | S | T | F | 1.1 | ||
| href | ● | ● | ● | ● | ● | ● | ● | URI |
| id | ● | ● | ● | ● | ● | ● | ● | 固有の拡張子 |
| class | ● | ● | ● | ● | ● | ● | ● | 分類名 |
| charset | ● | ● | ● | ● | ● | ● | ● | 文字符号 |
| name | ● | ● | ● | ● | ● | ● | × | Path |
| accesskey | ● | ● | ● | ● | ● | ● | ● | 任意の1文字 |
| target | × | ● | ● | × | ● | ● | × | フレーム名 |
| lang | ● | ● | ● | ● | ● | ● | × | Language Code |
| tabindex | ● | ● | ● | ● | ● | ● | ● | 任意の数字 |
| title | ● | ● | ● | ● | ● | ● | ● | 文字列 |
| style | ● | ● | ● | ● | ● | ● | × | CSS |
子要素として持てる要素は、インラインレベル要素のみ
| 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 |
| style | ● | ● | ● | ● | ● | ● | × | CSS |
| dir | ● | ● | ● | ● | ● | ● | ● | 文字方向 |
子要素として持てる要素は、インラインレベル要素、del、ins、script要素のみ
| Attribute | HTML4.01 | XHTML1.0 | XHTML | Value | ||||
| S | T | F | S | T | F | 1.1 | ||
| alt | ● | ● | ● | ● | ● | ● | ● | 代替テキスト |
| shape | ● | ● | ● | ● | ● | ● | ● | 領域の形状 |
| coords | ● | ● | ● | ● | ● | ● | ● | 領域の座標 |
| id | ● | ● | ● | ● | ● | ● | ● | 固有の拡張子 |
| class | ● | ● | ● | ● | ● | ● | ● | 分類名 |
| style | ● | ● | ● | ● | ● | ● | × | CSS |
| accesskey | ● | ● | ● | ● | ● | ● | ● | 任意の1文字 |
| target | × | ● | ● | × | ● | ● | × | フレーム名 |
| tabindex | ● | ● | ● | ● | ● | ● | ● | 任意の数字 |
| dir | ● | ● | ● | ● | ● | ● | ● | 文字方向 |
子要素として持てる要素はありません。