MDN wants to talk to developers like you: https://qsurvey.mozilla.com/s3/a3e7b5301fea

This interface is described in the spec as controversial, and is currently not implemented in any browsers. We have therefore decided to defer documenting this until a more stable solution is agreed upon.

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 Contributors to this page: teoli, kscarfone, chrisdavidmills
 Last updated by: teoli,