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Unsupported Attributes

The following global attributes are unsupported.

  • accesskey
  • aria*
  • autocapitalize
  • contenteditable
  • contextmenu
  • dir
  • dropzone
  • hidden
  • inputmode
  • is
  • item*
  • part
  • spellcheck
  • tabindex (supported, but does not match the specification. Negative values are not focused, and positive values will allow focus, but tab order cannot be specified.)
  • translate

Along with the above items, most event handlers should be attached using addEventListener instead of their on* counterparts.

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