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Type: language content type
The language of the script. Usually, you would set this to application/javascript.

Note: If the JavaScript file is in chrome://, setting this attribute to application/javascript will always use the latest available JavaScript version. If you omit this attribute, the default (and older) JavaScript version is used (like you get when including a JavaScript file from web content without specifying a version number).

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 Contributors to this page: Sheppy, Imphil, sdwilsh, Marsf, Dria
 Last updated by: Sheppy,