e.hjson

{
  # comments are useful
  # specify rate in requests/second
  "rate": 1000

  // maybe you prefer js style comments
  /* or if you feel old fashioned */

  # key names do not need to be placed in quotes
  key: "value"

  # you don't need quotes for strings
  text: look ma, no quotes!

  # note that for quoteless strings everything up
  # to the next line is part of the string!

  # commas are optional
  commas: {
    one: 1
    two: 2
  }

  # trailing commas are allowed
  trailing: {
    one: 1,
    two: 2,
  }

  # multiline string
  haiku:
    '''
    JSON I love you.
    But you strangle my expression.
    This is so much better.
    '''

  # array
  favNumbers: [ 1, 2, 3, 6, 42 ]
}

e.json5

{
  // comments are useful
  // specify rate in requests/second
  "rate": 1000,

  // maybe you prefer js style comments
  // or if you feel old fashioned

  // key names do not need to be placed in quotes
  key: "value",

  // you don't need quotes for strings
  text: 'look ma, no quotes!',

  // note that for quoteless strings everything up
  // to the next line is part of the string!

  // commas are optional
  commas: {
    one: 1,
    two: 2
  },

  // trailing commas are allowed
  trailing: {
    one: 1,
    two: 2,
  },

  // multiline string
  haiku:
    '''
    JSON I love you.\
    But you strangle my expression.\
    This is so much better.\
    '''

  // array
  favNumbers: [ 1, 2, 3, 6, 42 ]
}

e.yaml

# comments are useful
# specify rate in requests/second
rate: 1000

# maybe you prefer js style comments
# or if you feel old fashioned

# key names do not need to be placed in quotes
key: value

# you don't need quotes for strings
text: 'look ma, no quotes!'

# note that for quoteless strings everything up
# to the next line is part of the string!

# commas are optional
commas:
  one: 1
  two: 2

# trailing commas are allowed
trailing:
  one: 1
  two: 2

# multiline string
haiku: |-
  JSON I love you.
  But you strangle my expression.
  This is so much better.

# array
favNumbers:
  - 1
  - 2
  - 3
  - 6
  - 42