TextText-based

`text/javascript`

JavaScript (Text)

Reference for text/javascript, the official MIME type for JavaScript as standardized in RFC 9239 for use in HTML pages.

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Expected extensions: .js, .mjs

HTTP Content-Type Header

HTTP Header

Content-Type: text/javascript; charset=utf-8

Associated File Extensions

.js.mjs

Quick Facts

MIME Type	text/javascript
Category	Text
Type	Text-based (human-readable)
Extensions	.js, .mjs

Common Usage

text/javascript is the IANA-recommended MIME type for JavaScript (RFC 9239), replacing the older application/javascript. HTML script tags use this type by default.

Web servers, CDNs, and build tools should serve JavaScript files with this MIME type for optimal browser compatibility.

Code Examples

HTML

<!-- Link or embed with explicit type -->
<link rel="stylesheet" href="file.js" type="text/javascript">

<!-- Or for script/media elements -->
<script type="text/javascript" src="file.js"></script>

Node.js

// Express.js
app.get('/file', (req, res) => {
  res.type('text/javascript');
  res.send(data);
});

// Node.js http
res.writeHead(200, { 'Content-Type': 'text/javascript' });

nginx

# nginx.conf — add to types block or use default
types {
    text/javascript  js mjs;
}

# Or set for a specific location
location /api/ {
    default_type text/javascript;
}