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HTML entity references
There are two additional ways in HTML documents to reference characters:
- a numeric character reference refers to a character
- an entity reference refers to a series of characters
Where entities are used, the referenced characters appear.
Numeric character references:
A numeric character reference can be specified in two formats:
&#nnnn; or &#xhhhh;
where the n decimal digits or the h hexadecimal characters identify the Unicode character code of the referenced character.
&#nnnn; or &#xhhhh;
where the n decimal digits or the h hexadecimal characters identify the Unicode character code of the referenced character.
Entity references:
An entity reference is an alternative name for a series of characters.
You can use an entity in the &name; format, where name is the name of the entity.
Custom entities cannot be declared in HTML (unlike in XML), but the HTML 4 Document Type Definitions (DTDs) provides several internal entities.
The following table contains these predefined entities in HTML:
| Entity name | Character | Decimal reference | Hexadecimal reference |
|---|---|---|---|
| quot | " | " | " |
| amp | & | & | & |
| apos | ' | ' | ' |
| lt | < | < | < |
| gt | > | > | > |
| nbsp |   |   | |
| iexcl | ¡ | ¡ | ¡ |
| cent | ¢ | ¢ | ¢ |
| pound | £ | £ | £ |
| curren | ¤ | ¤ | ¤ |
| yen | ¥ | ¥ | ¥ |
| brvbar | ¦ | ¦ | ¦ |
| sect | § | § | § |
| uml | ¨ | ¨ | ¨ |
| copy | © | © | © |
| ordf | ª | ª | ª |
| laquo | « | « | « |
| not | ¬ | ¬ | ¬ |
| shy | | ­ | ­ |
| reg | ® | ® | ® |
| macr | ¯ | ¯ | ¯ |
| deg | ° | ° | ° |
| plusmn | ± | ± | ± |
| sup2 | ² | ² | ² |
| sup3 | ³ | ³ | ³ |
| acute | ´ | ´ | ´ |
| micro | µ | µ | µ |
| para | ¶ | ¶ | ¶ |
| middot | · | · | · |
| cedil | ¸ | ¸ | ¸ |
| sup1 | ¹ | ¹ | ¹ |
| ordm | º | º | º |
| raquo | » | » | » |
| frac14 | ¼ | ¼ | ¼ |
| frac12 | ½ | ½ | ½ |
| frac34 | ¾ | ¾ | ¾ |
| iquest | ¿ | ¿ | ¿ |
| Agrave | À | À | À |
| Aacute | Á | Á | Á |
| Acirc | Â | Â | Â |
| Atilde | Ã | Ã | Ã |
| Auml | Ä | Ä | Ä |
| Aring | Å | Å | Å |
| AElig | Æ | Æ | Æ |
| Ccedil | Ç | Ç | Ç |
| Egrave | È | È | È |
| Eacute | É | É | É |
| Ecirc | Ê | Ê | Ê |
| Euml | Ë | Ë | Ë |
| Igrave | Ì | Ì | Ì |
| Iacute | Í | Í | Í |
| Icirc | Î | Î | Î |
| Iuml | Ï | Ï | Ï |
| ETH | Ð | Ð | Ð |
| Ntilde | Ñ | Ñ | Ñ |
| Ograve | Ò | Ò | Ò |
| Oacute | Ó | Ó | Ó |
| Ocirc | Ô | Ô | Ô |
| Otilde | Õ | Õ | Õ |
| Ouml | Ö | Ö | Ö |
| times | × | × | × |
| Oslash | Ø | Ø | Ø |
| Ugrave | Ù | Ù | Ù |
| Uacute | Ú | Ú | Ú |
| Ucirc | Û | Û | Û |
| Uuml | Ü | Ü | Ü |
| Yacute | Ý | Ý | Ý |
| THORN | Þ | Þ | Þ |
| szlig | ß | ß | ß |
| agrave | à | à | à |
| aacute | á | á | á |
| acirc | â | â | â |
| atilde | ã | ã | ã |
| auml | ä | ä | ä |
| aring | å | å | å |
| aelig | æ | æ | æ |
| ccedil | ç | ç | ç |
| egrave | è | è | è |
| eacute | é | é | é |
| ecirc | ê | ê | ê |
| euml | ë | ë | ë |
| igrave | ì | ì | ì |
| iacute | í | í | í |
| icirc | î | î | î |
| iuml | ï | ï | ï |
| eth | ð | ð | ð |
| ntilde | ñ | ñ | ñ |
| ograve | ò | ò | ò |
| oacute | ó | ó | ó |
| ocirc | ô | ô | ô |
| otilde | õ | õ | õ |
| ouml | ö | ö | ö |
| divide | ÷ | ÷ | ÷ |
| oslash | ø | ø | ø |
| ugrave | ù | ù | ù |
| uacute | ú | ú | ú |
| ucirc | û | û | û |
| uuml | ü | ü | ü |
| yacute | ý | ý | ý |
| thorn | þ | þ | þ |
| yuml | ÿ | ÿ | ÿ |
| OElig | Œ | Œ | Œ |
| oelig | œ | œ | œ |
| Scaron | Š | Š | Š |
| scaron | š | š | š |
| Yuml | Ÿ | Ÿ | Ÿ |
| fnof | ƒ | ƒ | ƒ |
| circ | ˆ | ˆ | ˆ |
| tilde | ˜ | ˜ | ˜ |
| Alpha | Α | Α | Α |
| Beta | Β | Β | Β |
| Gamma | Γ | Γ | Γ |
| Delta | Δ | Δ | Δ |
| Epsilon | Ε | Ε | Ε |
| Zeta | Ζ | Ζ | Ζ |
| Eta | Η | Η | Η |
| Theta | Θ | Θ | Θ |
| Iota | Ι | Ι | Ι |
| Kappa | Κ | Κ | Κ |
| Lambda | Λ | Λ | Λ |
| Mu | Μ | Μ | Μ |
| Nu | Ν | Ν | Ν |
| Xi | Ξ | Ξ | Ξ |
| Omicron | Ο | Ο | Ο |
| Pi | Π | Π | Π |
| Rho | Ρ | Ρ | Ρ |
| Sigma | Σ | Σ | Σ |
| Tau | Τ | Τ | Τ |
| Upsilon | Υ | Υ | Υ |
| Phi | Φ | Φ | Φ |
| Chi | Χ | Χ | Χ |
| Psi | Ψ | Ψ | Ψ |
| Omega | Ω | Ω | Ω |
| alpha | α | α | α |
| beta | β | β | β |
| gamma | γ | γ | γ |
| delta | δ | δ | δ |
| epsilon | ε | ε | ε |
| zeta | ζ | ζ | ζ |
| eta | η | η | η |
| theta | θ | θ | θ |
| iota | ι | ι | ι |
| kappa | κ | κ | κ |
| lambda | λ | λ | λ |
| mu | μ | μ | μ |
| nu | ν | ν | ν |
| xi | ξ | ξ | ξ |
| omicron | ο | ο | ο |
| pi | π | π | π |
| rho | ρ | ρ | ρ |
| sigmaf | ς | ς | ς |
| sigma | σ | σ | σ |
| tau | τ | τ | τ |
| upsilon | υ | υ | υ |
| phi | φ | φ | φ |
| chi | χ | χ | χ |
| psi | ψ | ψ | ψ |
| omega | ω | ω | ω |
| thetasym | ϑ | ϑ | ϑ |
| upsih | ϒ | ϒ | ϒ |
| piv | ϖ | ϖ | ϖ |
| ensp |   |   | |
| emsp |   |   | |
| thinsp |   |   | |
| zwnj | | ‌ | ‌ |
| zwj | | ‍ | ‍ |
| lrm | | ‎ | ‎ |
| rlm | | ‏ | ‏ |
| ndash | – | – | – |
| mdash | — | — | — |
| lsquo | ‘ | ‘ | ‘ |
| rsquo | ’ | ’ | ’ |
| sbquo | ‚ | ‚ | ‚ |
| ldquo | “ | “ | “ |
| rdquo | ” | ” | ” |
| bdquo | „ | „ | „ |
| dagger | † | † | † |
| Dagger | ‡ | ‡ | ‡ |
| bull | • | • | • |
| hellip | … | … | … |
| permil | ‰ | ‰ | ‰ |
| prime | ′ | ′ | ′ |
| Prime | ″ | ″ | ″ |
| lsaquo | ‹ | ‹ | ‹ |
| rsaquo | › | › | › |
| oline | ‾ | ‾ | ‾ |
| frasl | ⁄ | ⁄ | ⁄ |
| euro | € | € | € |
| image | ℑ | ℑ | ℑ |
| weierp | ℘ | ℘ | ℘ |
| real | ℜ | ℜ | ℜ |
| trade | ™ | ™ | ™ |
| alefsym | ℵ | ℵ | ℵ |
| larr | ← | ← | ← |
| uarr | ↑ | ↑ | ↑ |
| rarr | → | → | → |
| darr | ↓ | ↓ | ↓ |
| harr | ↔ | ↔ | ↔ |
| crarr | ↵ | ↵ | ↵ |
| lArr | ⇐ | ⇐ | ⇐ |
| uArr | ⇑ | ⇑ | ⇑ |
| rArr | ⇒ | ⇒ | ⇒ |
| dArr | ⇓ | ⇓ | ⇓ |
| hArr | ⇔ | ⇔ | ⇔ |
| forall | ∀ | ∀ | ∀ |
| part | ∂ | ∂ | ∂ |
| exist | ∃ | ∃ | ∃ |
| empty | ∅ | ∅ | ∅ |
| nabla | ∇ | ∇ | ∇ |
| isin | ∈ | ∈ | ∈ |
| notin | ∉ | ∉ | ∉ |
| ni | ∋ | ∋ | ∋ |
| prod | ∏ | ∏ | ∏ |
| sum | ∑ | ∑ | ∑ |
| minus | − | − | − |
| lowast | ∗ | ∗ | ∗ |
| radic | √ | √ | √ |
| prop | ∝ | ∝ | ∝ |
| infin | ∞ | ∞ | ∞ |
| ang | ∠ | ∠ | ∠ |
| and | ∧ | ∧ | ∧ |
| or | ∨ | ∨ | ∨ |
| cap | ∩ | ∩ | ∩ |
| cup | ∪ | ∪ | ∪ |
| int | ∫ | ∫ | ∫ |
| there4 | ∴ | ∴ | ∴ |
| sim | ∼ | ∼ | ∼ |
| cong | ≅ | ≅ | ≅ |
| asymp | ≈ | ≈ | ≈ |
| ne | ≠ | ≠ | ≠ |
| equiv | ≡ | ≡ | ≡ |
| le | ≤ | ≤ | ≤ |
| ge | ≥ | ≥ | ≥ |
| sub | ⊂ | ⊂ | ⊂ |
| sup | ⊃ | ⊃ | ⊃ |
| nsub | ⊄ | ⊄ | ⊄ |
| sube | ⊆ | ⊆ | ⊆ |
| supe | ⊇ | ⊇ | ⊇ |
| oplus | ⊕ | ⊕ | ⊕ |
| otimes | ⊗ | ⊗ | ⊗ |
| perp | ⊥ | ⊥ | ⊥ |
| sdot | ⋅ | ⋅ | ⋅ |
| lceil | ⌈ | ⌈ | ⌈ |
| rceil | ⌉ | ⌉ | ⌉ |
| lfloor | ⌊ | ⌊ | ⌊ |
| rfloor | ⌋ | ⌋ | ⌋ |
| lang | 〈 | 〈 | 〈 |
| rang | 〉 | 〉 | 〉 |
| loz | ◊ | ◊ | ◊ |
| spades | ♠ | ♠ | ♠ |
| clubs | ♣ | ♣ | ♣ |
| hearts | ♥ | ♥ | ♥ |
| diams | ♦ | ♦ | ♦ |
Notes:
- the apos entity is not supported by Internet Explorer
- all entities are case sensitive, but the amp, copy, gt, lt, quot and req entities can also be used in uppercase (AMP, COPY, etc.).
Example 1:
This example illustrates the use of predefined entities in HTML documents:
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<body> 2 < 5 and 5 < 10 so 10 > 2 </body> |
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