Package Exports

html-entities

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Readme

html-entities

Fastest html entities library.

Installation

$ npm install html-entities

Usage

encode(text, options)

Encodes text replacing HTML special characters (<>&"'') plus other character ranges depending on mode option value.

import {encode} from 'html-entities';

encode('<>"\'&©∆')
// -> '&lt;&gt;&quot;&apos;&amp;©∆'

encode('<>"\'&©∆', {mode: 'nonAsciiPrintable'})
// -> '&lt;&gt;&quot;&apos;&amp;&copy;&#8710;'

encode('<>"\'&©∆', {mode: 'nonAsciiPrintable', level: 'xml'})
// -> '&lt;&gt;&quot;&apos;&amp;&#169;&#8710;'

Options:

level

all alias to html5 (default).
html5 uses HTML5 named references.
html4 uses HTML4 named references.
xml uses XML named references.

mode

specialChars encodes only HTML special characters (default).
nonAscii encodes HTML special characters and everything outside of the ASCII character range.
nonAsciiPrintable encodes HTML special characters and everything outiside of the ASCII printable characters.

numeric

decimal uses decimal numbers when encoding html entities. i.e. © (default).
hexadecimal uses hexadecimal numbers when encoding html entities. i.e. ©.

decode(text, options)

Decodes text replacing entities to characters. Unknown entities are left as is.

import {decode} from 'html-entities';

decode('&lt;&gt;&quot;&apos;&amp;&#169;&#8710;')
// -> '<>"\'&©∆'

decode('&copy', {level: 'html5'})
// -> '©'

decode('&copy', {level: 'xml'})
// -> '&copy;'

Options:

level

all alias to html5 (default).
html5 uses HTML5 named references.
html4 uses HTML4 named references.
xml uses XML named references.

scope

'body' emulates behavior of browser when parsing tag bodies: entities without semicolon are also replaced (default).
'attribute' emulates behavior of browser when parsing tag attributes: entities without semicolon are replaced when not followed by equality sign =.
'strict' ignores entities without semicolon.

Performance

Statistically significant comparison with other libraries using benchmark.js. Results by this library are marked with *. The source code of the benchmark is available at benchmark/benchmark.ts.

HTML

    Encode test
      * #1: html-entities.encode - html5, specialChars x 1,182,489 ops/sec ±0.65% (93 runs sampled)
      * #2: html-entities.encode - html5, nonAscii x 442,639 ops/sec ±1.49% (90 runs sampled)
      * #3: html-entities.encode - html5, nonAsciiPrintable x 426,967 ops/sec ±1.07% (92 runs sampled)
        #4: entities.encodeHTML5 x 127,785 ops/sec ±1.16% (94 runs sampled)
        #5: he.encode x 113,690 ops/sec ±1.11% (89 runs sampled)

    Decode test
      * #1: html-entities.decode - html5, body x 358,440 ops/sec ±0.74% (89 runs sampled)
      * #2: html-entities.decode - html5, attribute x 354,841 ops/sec ±1.54% (91 runs sampled)
      * #3: html-entities.decode - html5, strict x 346,212 ops/sec ±1.79% (89 runs sampled)
        #4: entities.decodeHTML4 x 288,765 ops/sec ±0.75% (96 runs sampled)
        #5: entities.decodeHTML5 x 283,268 ops/sec ±0.96% (87 runs sampled)
        #6: he.decode x 212,620 ops/sec ±2.63% (93 runs sampled)

XML

    Encode test
      * #1: html-entities.encode - xml, specialChars x 1,123,722 ops/sec ±1.79% (93 runs sampled)
        #2: he.escape x 1,139,774 ops/sec ±3.95% (85 runs sampled)
      * #3: html-entities.encode - xml, nonAscii x 434,552 ops/sec ±0.68% (95 runs sampled)
      * #4: html-entities.encode - xml, nonAsciiPrintable x 409,857 ops/sec ±0.52% (93 runs sampled)
        #5: entities.encodeXML x 292,893 ops/sec ±2.19% (93 runs sampled)
        #6: entities.escape x 225,854 ops/sec ±2.37% (94 runs sampled)

    Decode test
      * #1: html-entities.decode - xml, body x 404,036 ops/sec ±0.45% (94 runs sampled)
      * #2: html-entities.decode - xml, strict x 402,978 ops/sec ±0.53% (94 runs sampled)
        #3: entities.decodeXMLStrict x 393,540 ops/sec ±3.02% (91 runs sampled)
      * #4: html-entities.decode - xml, attribute x 389,117 ops/sec ±1.99% (91 runs sampled)
        #5: entities.decodeXML x 389,969 ops/sec ±3.47% (87 runs sampled)
        #6: he.unescape x 245,149 ops/sec ±1.28% (93 runs sampled)

License

MIT