node js get extension from filename code example

Example 1: how to check file extension in node js

var path = require('path');

var ext = path.extname('/Users/Refsnes/demo_path.js');

  console.log(ext);

Example 2: how to get the extension from filename using javascript

var ext = fileName.substr(fileName.lastIndexOf('.') + 1);

Example 3: node js get file name without extension

filename.split('.').slice(0, -1).join('.')