<p>Comprehensive MIME type mapping API based on mime-db module.</p>

<h3>Install</h3>

<p>Install with <a href="http://github.com/isaacs/npm">npm</a>:</p>

<p> npm install mime</p>

<h3>Contributing / Testing</h3>

<p> npm run test</p>

<h3>Command Line</h3>

<p> mime [path_string]</p>

<p>E.g.</p>

<blockquote>
<p>mime scripts/jquery.js</p>
</blockquote>
<p> application/javascript</p>

<h3>API - Queries</h3>

<h4>mime.lookup(path)</h4>
<p>Get the mime type associated with a file, if no mime type is found <code>application/octet-stream</code> is returned. Performs a case-insensitive lookup using the extension in <code>path</code> (the substring after the last '/' or '.'). E.g.</p>

<pre><code>
var mime = require('mime');

mime.lookup('/path/to/file.txt'); // => 'text/plain'
mime.lookup('file.txt'); // => 'text/plain'
mime.lookup('.TXT'); // => 'text/plain'
mime.lookup('htm'); // => 'text/html'
</code></pre>

<h4>mime.default_type</h4>
<p>Sets the mime type returned when <code>mime.lookup</code> fails to find the extension searched for. (Default is <code>application/octet-stream</code>.)</p>

<h4>mime.extension(type)</h4>
<p>Get the default extension for <code>type</code></p>

<pre><code>
mime.extension('text/html'); // => 'html'
mime.extension('application/octet-stream'); // => 'bin'
</code></pre>

<h4>mime.charsets.lookup()</h4>

<p>Map mime-type to charset</p>

<pre><code>
mime.charsets.lookup('text/plain'); // => 'UTF-8'
</code></pre>

<p>(The logic for charset lookups is pretty rudimentary. Feel free to suggest improvements.)</p>

<h3>API - Defining Custom Types</h3>

<p>Custom type mappings can be added on a per-project basis via the following APIs.</p>

<h4>mime.define()</h4>

<p>Add custom mime/extension mappings</p>

<pre><code>
mime.define({
'text/x-some-format': ['x-sf', 'x-sft', 'x-sfml'],
'application/x-my-type': ['x-mt', 'x-mtt'],
// etc ...
});

mime.lookup('x-sft'); // => 'text/x-some-format'
</code></pre>

<p>The first entry in the extensions array is returned by <code>mime.extension()</code>. E.g.</p>

<pre><code>
mime.extension('text/x-some-format'); // => 'x-sf'
</code></pre>

<h4>mime.load(filepath)</h4>

<p>Load mappings from an Apache ".types" format file</p>

<pre><code>
mime.load('./my_project.types');
</code></pre>
<p>The .types file format is simple - See the <code>types</code> dir for examples.</p>

<hr>

<p>本文由模极社发布</p>

<hr>
<p>!<a href="upload://im5w4bbZS7qEfHo32U8caxAUX72.svg">mime类型模块 - 编程技术参考</a></p>

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