HTML Entities
Some characters are reserved in HTML.
If you use the less than (<) or greater than (>) signs in your text, the browser might mix them with tags.
Character entities are used to display reserved characters in HTML.
A character entity looks like this:
&entity_name;
OR
&#entity_number;
To display a less than sign we must write: < or <
| The advantage of using an entity name, instead of a number, is that the name is easier to remember. The disadvantage is that browsers may not support all entity names, but the support for numbers is good. |
Non Breaking Space
A common character entity used in HTML is the non breaking space ( ).
Remember that browsers will always truncate spaces in HTML pages. If you write 10 spaces in your text, the browser will remove 9 of them. To add real spaces to your text, you can use the character entity.
Combining Diacritical Marks
A diacritical mark is a "glyph" added to a letter.
Some diacritical marks, like acute ( ̀) and grave ( ́) are called accents.
Diacritical marks can appear both above and below a letter, inside a letter, and between two letters.
Diacritical marks can be used in combination with alphanumeric characters, to produce a character that is not present in the character set (encoding) used in the page.
Here are some examples:
| Mark | Character | Construct | Result |
|---|---|---|---|
| ̀ | a | à | à |
| ́ | a | á | á |
| ̂ | a | â | â |
| ̃ | a | ã | ã |
| ̀ | O | Ò | Ò |
| ́ | O | Ó | Ó |
| ̂ | O | Ô | Ô |
| ̃ | O | Õ | Õ |
Some Useful HTML Character Entities
| Entity names are case sensitive. |
| Result | Description | Entity Name | Entity Number |
|---|---|---|---|
| non-breaking space | |   | |
| < | less than | < | < |
| > | greater than | > | > |
| & | ampersand | & | & |
| ¢ | cent | ¢ | ¢ |
| £ | pound | £ | £ |
| ¥ | yen | ¥ | ¥ |
| € | euro | € | € |
| © | copyright | © | © |
| ® | registered trademark | ® | ® |
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