YAML parser for JavaScript - JS-YAML
Description: Live example of YAML JavaScript parser right in your browser. Type your YAML code and see result.
Keywords: yaml,parser,javascript

# JS-YAML demo. YAML JavaScript parser.

#### permalink Edit source here:

--- # Collection Types ############################################################# ################################################################################ # http://yaml.org/type/map.html -----------------------------------------------# map: # Unordered set of key: value pairs. Block style: !!map Clark : Evans Ingy : döt Net Oren : Ben-Kiki Flow style: !!map { Clark: Evans, Ingy: döt Net, Oren: Ben-Kiki } # http://yaml.org/type/omap.html ----------------------------------------------# omap: # Explicitly typed ordered map (dictionary). Bestiary: !!omap - aardvark: African pig-like ant eater. Ugly. - anteater: South-American ant eater. Two species. - anaconda: South-American constrictor snake. Scaly. # Etc. # Flow style Numbers: !!omap [ one: 1, two: 2, three : 3 ] # http://yaml.org/type/pairs.html ---------------------------------------------# pairs: # Explicitly typed pairs. Block tasks: !!pairs - meeting: with team. - meeting: with boss. - break: lunch. - meeting: with client. Flow tasks: !!pairs [ meeting: with team, meeting: with boss ] # http://yaml.org/type/set.html -----------------------------------------------# set: # Explicitly typed set. baseball players: !!set ? Mark McGwire ? Sammy Sosa ? Ken Griffey # Flow style baseball teams: !!set { Boston Red Sox, Detroit Tigers, New York Yankees } # http://yaml.org/type/seq.html -----------------------------------------------# seq: # Ordered sequence of nodes Block style: !!seq - Mercury # Rotates - no light/dark sides. - Venus # Deadliest. Aptly named. - Earth # Mostly dirt. - Mars # Seems empty. - Jupiter # The king. - Saturn # Pretty. - Uranus # Where the sun hardly shines. - Neptune # Boring. No rings. - Pluto # You call this a planet? Flow style: !!seq [ Mercury, Venus, Earth, Mars, # Rocks Jupiter, Saturn, Uranus, Neptune, # Gas Pluto ] # Overrated # Scalar Types ################################################################# ################################################################################ # http://yaml.org/type/bool.html ----------------------------------------------# bool: - true - True - TRUE - false - False - FALSE # http://yaml.org/type/float.html ---------------------------------------------# float: canonical: 6.8523015e+5 exponentioal: 685.230_15e+03 fixed: 685_230.15 negative infinity: -.inf not a number: .NaN # http://yaml.org/type/int.html -----------------------------------------------# int: canonical: 685230 decimal: +685_230 octal: 0o2472256 hexadecimal: 0x_0A_74_AE binary: 0b1010_0111_0100_1010_1110 # http://yaml.org/type/merge.html ---------------------------------------------# merge: - &CENTER { x: 1, y: 2 } - &LEFT { x: 0, y: 2 } - &BIG { r: 10 } - &SMALL { r: 1 } # All the following maps are equal: - # Explicit keys x: 1 y: 2 r: 10 label: nothing - # Merge one map << : *CENTER r: 10 label: center - # Merge multiple maps << : [ *CENTER, *BIG ] label: center/big - # Override << : [ *BIG, *LEFT, *SMALL ] x: 1 label: big/left/small # http://yaml.org/type/null.html ----------------------------------------------# null: # This mapping has four keys, # one has a value. empty: canonical: ~ english: null ~: null key # This sequence has five # entries, two have values. sparse: - ~ - 2nd entry - - 4th entry - Null # http://yaml.org/type/str.html -----------------------------------------------# string: abcd # http://yaml.org/type/timestamp.html -----------------------------------------# timestamp: canonical: 2001-12-15T02:59:43.1Z valid iso8601: 2001-12-14t21:59:43.10-05:00 space separated: 2001-12-14 21:59:43.10 -5 no time zone (Z): 2001-12-15 2:59:43.10 date (00:00:00Z): 2002-12-14 # Custom types ################################################################# ################################################################################ # JS-YAML allows you to specify a custom YAML types for your structures. # This is a simple example of custom constructor defined in `js/demo.js` for # custom `!sexy` type: # # var SexyYamlType = new jsyaml.Type('!sexy', { # kind: 'sequence', # construct: function (data) { # return data.map(function (string) { return 'sexy ' + string; }); # } # }); # # var SEXY_SCHEMA = jsyaml.Schema.create([ SexyYamlType ]); # # result = jsyaml.load(yourData, { schema: SEXY_SCHEMA }); foobar: !sexy - bunny - chocolate

#### Result (JS object dump):

Fork me on GitHub