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objects.md

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Objects

Dot notation, bracket notation

Dot notation:

  • Property identifies can only be alphanumeric (and _ and $)
  • Property identifiers cannot start with a number.
  • Property identifiers cannot contain variables.
  • OK — obj.prop_1, obj.prop$
  • Not OK — obj.1prop, obj.prop name

Bracket notation:

  • Property identifiers have to be a String or a variable that references a String.
  • It is okay to use variables, spaces, and Strings that start with numbers
  • OK — obj["1prop"], obj["prop name"]

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