2.1.65 [W3C-HTML52] Section 4.12.1.2. Scripting languages

  • Article

V0214: Some MIME types are not recognized

The specification states:

 4.12.1.2 Scripting languages
  
     A JavaScript MIME type is a MIME type string that is one of the following and refers 
     to JavaScript: [ECMA-262]
  
         "application/ecmascript"
         ...
         "text/javascript1.0"
         ...
         "text/javascript1.4"
         "text/javascript1.5"
         ...
         "text/x-ecmascript"
  
     User agents must recognize all JavaScript MIME types.

EdgeHTML Mode

The following MIME types are not recognized:

    "application/x-ecmascript"

    "text/javascript1.0"

    "text/javascript1.4"

    "text/javascript1.5"

    "text/x-ecmascript"

V0215: Script language type recognition is based on the type/language attribute

The specification states:

 ... Scripting languages
     ...
     When examining types to determine if they represent supported languages, user agents 
     must not ignore MIME parameters. Types are to be compared including all parameters.

EdgeHTML Mode

Determination on whether a script is represented in a supported language is based on the type/language attribute. The attribute is validated against a list of recognized script types.