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  1. html-entities
  2. =============
  3. Fastest HTML entities library.
  4. Comes with both TypeScript and Flow types.
  5. Installation
  6. ------------
  7. ```bash
  8. $ npm install html-entities
  9. ```
  10. Usage
  11. -----
  12. ### encode(text, options)
  13. Encodes text replacing HTML special characters (`<>&"'`) and/or other character ranges depending on `mode` option value.
  14. ```js
  15. import {encode} from 'html-entities';
  16. encode('< > " \' & © ∆');
  17. // -> '&lt; &gt; &quot; &apos; &amp; © ∆'
  18. encode('< ©', {mode: 'nonAsciiPrintable'});
  19. // -> '&lt; &copy;'
  20. encode('< ©', {mode: 'nonAsciiPrintable', level: 'xml'});
  21. // -> '&lt; &#169;'
  22. encode('< > " \' & ©', {mode: 'nonAsciiPrintableOnly', level: 'xml'});
  23. // -> '< > " \' & &#169;'
  24. ```
  25. Options:
  26. #### level
  27. * `all` alias to `html5` (default).
  28. * `html5` uses `HTML5` named references.
  29. * `html4` uses `HTML4` named references.
  30. * `xml` uses `XML` named references.
  31. #### mode
  32. * `specialChars` encodes only HTML special characters (default).
  33. * `nonAscii` encodes HTML special characters and everything outside the [ASCII character range](https://en.wikipedia.org/wiki/ASCII).
  34. * `nonAsciiPrintable` encodes HTML special characters and everything outiside of the [ASCII printable characters](https://en.wikipedia.org/wiki/ASCII#Printable_characters).
  35. * `nonAsciiPrintableOnly` everything outiside of the [ASCII printable characters](https://en.wikipedia.org/wiki/ASCII#Printable_characters) keeping HTML special characters intact.
  36. * `extensive` encodes all non-printable characters, non-ASCII characters and all characters with named references.
  37. #### numeric
  38. * `decimal` uses decimal numbers when encoding html entities. i.e. `&#169;` (default).
  39. * `hexadecimal` uses hexadecimal numbers when encoding html entities. i.e. `&#xa9;`.
  40. ### decode(text, options)
  41. Decodes text replacing entities to characters. Unknown entities are left as is.
  42. ```js
  43. import {decode} from 'html-entities';
  44. decode('&lt; &gt; &quot; &apos; &amp; &#169; &#8710;');
  45. // -> '< > " \' & © ∆'
  46. decode('&copy;', {level: 'html5'});
  47. // -> '©'
  48. decode('&copy;', {level: 'xml'});
  49. // -> '&copy;'
  50. ```
  51. Options:
  52. #### level
  53. * `all` alias to `html5` (default).
  54. * `html5` uses `HTML5` named references.
  55. * `html4` uses `HTML4` named references.
  56. * `xml` uses `XML` named references.
  57. #### scope
  58. * `body` emulates behavior of browser when parsing tag bodies: entities without semicolon are also replaced (default).
  59. * `attribute` emulates behavior of browser when parsing tag attributes: entities without semicolon are replaced when not followed by equality sign `=`.
  60. * `strict` ignores entities without semicolon.
  61. ### decodeEntity(text, options)
  62. Decodes a single HTML entity. Unknown entitiy is left as is.
  63. ```js
  64. import {decodeEntity} from 'html-entities';
  65. decodeEntity('&lt;');
  66. // -> '<'
  67. decodeEntity('&copy;', {level: 'html5'});
  68. // -> '©'
  69. decodeEntity('&copy;', {level: 'xml'});
  70. // -> '&copy;'
  71. ```
  72. Options:
  73. #### level
  74. * `all` alias to `html5` (default).
  75. * `html5` uses `HTML5` named references.
  76. * `html4` uses `HTML4` named references.
  77. * `xml` uses `XML` named references.
  78. Performance
  79. -----------
  80. Statistically significant comparison with other libraries using `benchmark.js`.
  81. Results by this library are marked with `*`.
  82. The source code of the benchmark is available at `benchmark/benchmark.ts`.
  83. ```
  84. Common
  85. Initialization / Load speed
  86. * #1: html-entities x 2,632,942 ops/sec ±3.71% (72 runs sampled)
  87. #2: entities x 1,379,154 ops/sec ±5.87% (75 runs sampled)
  88. #3: he x 1,334,035 ops/sec ±3.14% (83 runs sampled)
  89. HTML5
  90. Encode test
  91. * #1: html-entities.encode - html5, nonAscii x 415,806 ops/sec ±0.73% (85 runs sampled)
  92. * #2: html-entities.encode - html5, nonAsciiPrintable x 401,420 ops/sec ±0.35% (93 runs sampled)
  93. #3: entities.encodeNonAsciiHTML x 401,235 ops/sec ±0.41% (88 runs sampled)
  94. #4: entities.encodeHTML x 284,868 ops/sec ±0.45% (93 runs sampled)
  95. * #5: html-entities.encode - html5, extensive x 237,613 ops/sec ±0.42% (93 runs sampled)
  96. #6: he.encode x 91,459 ops/sec ±0.50% (84 runs sampled)
  97. Decode test
  98. #1: entities.decodeHTMLStrict x 614,920 ops/sec ±0.41% (89 runs sampled)
  99. #2: entities.decodeHTML x 577,698 ops/sec ±0.44% (90 runs sampled)
  100. * #3: html-entities.decode - html5, strict x 323,680 ops/sec ±0.39% (92 runs sampled)
  101. * #4: html-entities.decode - html5, body x 297,548 ops/sec ±0.45% (91 runs sampled)
  102. * #5: html-entities.decode - html5, attribute x 293,617 ops/sec ±0.37% (94 runs sampled)
  103. #6: he.decode x 145,383 ops/sec ±0.36% (94 runs sampled)
  104. HTML4
  105. Encode test
  106. * #1: html-entities.encode - html4, nonAscii x 379,799 ops/sec ±0.29% (96 runs sampled)
  107. * #2: html-entities.encode - html4, nonAsciiPrintable x 350,003 ops/sec ±0.42% (92 runs sampled)
  108. * #3: html-entities.encode - html4, extensive x 169,759 ops/sec ±0.43% (90 runs sampled)
  109. Decode test
  110. * #1: html-entities.decode - html4, attribute x 291,048 ops/sec ±0.42% (92 runs sampled)
  111. * #2: html-entities.decode - html4, strict x 287,110 ops/sec ±0.56% (93 runs sampled)
  112. * #3: html-entities.decode - html4, body x 285,529 ops/sec ±0.57% (93 runs sampled)
  113. XML
  114. Encode test
  115. #1: entities.encodeXML x 418,561 ops/sec ±0.80% (90 runs sampled)
  116. * #2: html-entities.encode - xml, nonAsciiPrintable x 402,868 ops/sec ±0.30% (89 runs sampled)
  117. * #3: html-entities.encode - xml, nonAscii x 403,669 ops/sec ±7.87% (83 runs sampled)
  118. * #4: html-entities.encode - xml, extensive x 237,766 ops/sec ±0.45% (93 runs sampled)
  119. Decode test
  120. #1: entities.decodeXML x 888,700 ops/sec ±0.48% (93 runs sampled)
  121. * #2: html-entities.decode - xml, strict x 353,127 ops/sec ±0.40% (92 runs sampled)
  122. * #3: html-entities.decode - xml, body x 355,796 ops/sec ±1.58% (86 runs sampled)
  123. * #4: html-entities.decode - xml, attribute x 369,454 ops/sec ±8.74% (84 runs sampled)
  124. Escaping
  125. Escape test
  126. #1: entities.escapeUTF8 x 1,308,013 ops/sec ±0.37% (91 runs sampled)
  127. * #2: html-entities.encode - xml, specialChars x 1,258,760 ops/sec ±1.00% (93 runs sampled)
  128. #3: he.escape x 822,569 ops/sec ±0.24% (94 runs sampled)
  129. #4: entities.escape x 434,243 ops/sec ±0.34% (91 runs sampled)
  130. ```
  131. License
  132. -------
  133. MIT
  134. Security contact information
  135. ----------------------------
  136. To report a security vulnerability, please use the
  137. [Tidelift security contact](https://tidelift.com/security). Tidelift will
  138. coordinate the fix and disclosure.
  139. `html-entities` for enterprise
  140. ------------------------------
  141. Available as part of the Tidelift Subscription
  142. The maintainers of `html-entities` and thousands of other packages are working with
  143. Tidelift to deliver commercial support and maintenance for the open source
  144. dependencies you use to build your applications. Save time, reduce risk, and
  145. improve code health, while paying the maintainers of the exact dependencies you
  146. use.
  147. [Learn more.](https://tidelift.com/subscription/pkg/npm-html-entities?utm_source=npm-html-entities&utm_medium=referral&utm_campaign=enterprise)