87 lines
1.6 KiB
Markdown
87 lines
1.6 KiB
Markdown
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<!--
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@license Apache-2.0
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Copyright (c) 2018 The Stdlib Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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-->
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# Filename Extension
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> Return a filename extension.
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<section class="usage">
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## Usage
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```javascript
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var extname = require( '@stdlib/utils/extname' );
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```
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#### extname( filename )
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Returns a filename extension.
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```javascript
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var ext = extname( 'index.js' );
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// returns '.js'
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```
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</section>
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<!-- /.usage -->
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<section class="examples">
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## Examples
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<!-- eslint no-undef: "error" -->
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```javascript
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var statSync = require( 'fs' ).statSync;
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var path = require( 'path' );
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var readDir = require( '@stdlib/fs/read-dir' ).sync;
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var extname = require( '@stdlib/utils/extname' );
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var files;
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var fpath;
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var base;
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var stat;
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var ext;
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var i;
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base = path.resolve( __dirname, '..' );
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files = readDir( base );
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for ( i = 0; i < files.length; i++ ) {
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fpath = path.join( base, files[ i ] );
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stat = statSync( fpath );
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if ( !stat.isDirectory() ) {
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ext = extname( fpath );
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console.log( '%s --> %s', fpath, ext || '(no ext)' );
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}
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}
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```
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</section>
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<!-- /.examples -->
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<section class="links">
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</section>
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<!-- /.links -->
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