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Asked: 2026-06-01T13:41:35+00:00

I would like to know if is better to use application/javascript or application/ecmascript and

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I would like to know if is better to use application/javascript or application/ecmascript and if i should use application/languagename instead of text/languagename with other languages.

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  1. Editorial Team

    Officially, IANA (keepers of the official MIME type registry) lists text/javascript and text/ecmascript as obsolete (via RFC 4329).

    Of those two, it easiest to use application/javascript. The use of application/ecmascript brings with it stricter character encoding requirements and less forgiving error handling as specified in 4329.

    Practically, you have to use text/javascript if you want it to work in IE.

    Also, my recommendation is to skip the type attribute of <script> tags entirely. Every browser will run your JS just fine without. (You still need to serve .js files with a HTTP Content-Type of text/javascript, though.)

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