JAVASCRIPT

JavaScript - How to get the extension of a filename

let filename = "index.js";
let extension = filename.split(".").pop();

console.log(extension); // "js"

how to check the extension of a file in javascript

return filename.split('.').pop();

how to get file extension in javascript

var fileName = "myDocument.pdf";
var fileExtension = fileName.split('.').pop(); //"pdf"