How to trim a file extension from a String in JavaScript?
Not sure what would perform faster but this would be more reliable when it comes to extension like .jpeg or .html
x.replace(/\.[^/.]+$/, "")
In node.js, the name of the file without the extension can be obtained as follows.
const path = require('path');const filename = 'hello.html'; path.parse(filename).name; //=> "hello"path.parse(filename).ext; //=> ".html"path.parse(filename).base; //=> "hello.html"Further explanation at Node.js documentation page.
If you know the length of the extension, you can use x.slice(0, -4) (where 4 is the three characters of the extension and the dot).
If you don't know the length @John Hartsock regex would be the right approach.
If you'd rather not use regular expressions, you can try this (less performant):
filename.split('.').slice(0, -1).join('.')Note that it will fail on files without extension.