This RegExp is useful for extracting file extensions from URLs - even ones that have ?foo=1 query strings and #hash endings. It will also provide you with the extension as $1.

Oct 10, 2008 · function splitFileName(fileName) { // Get the extention with a regular expression const ext = /(?:\.([^.]+))?$/.exec(fileName); // If there is no extension, return the filename with …

Sep 25, 2024 · Regular expressions can be used to extract the file extension from the full filename. A new RegExp object is created with the regular expression "[^.]+$". The caret(^) …

Mar 25, 2009 · get the value in the variable & then separate its extension just like this. var find_file_ext=document.getElementById('filename').value; var …

Nov 23, 2024 · One efficient way to extract the file extension is to use a regular expression. Here is a straightforward function to do that: function getFileExtension ( filename ) { const match = …

Apr 2, 2025 · Fortunately, there are effective ways to identify file types or extensions effortlessly by leveraging client-side scripts like JavaScript and jQuery. These tools not only streamline the …

Regular expression tester with syntax highlighting, explanation, cheat sheet for PHP/PCRE, Python, GO, JavaScript, Java, C#/.NET, Rust.

Apr 26, 2025 · In JavaScript, you can extract the file extension from a filename using several methods. Here are two common approaches: Using split () and pop () Use the pop() method to …

Jan 25, 2012 · var extension = filename[0].match(regexFileExtension); // returns extension. console.log("The filename is " + filename[0]); console.log("The extension is " + extension[0]); …

May 5, 2024 · Validate file extensions easily with JavaScript! Learn how to extract file extensions using regex or split & pop methods.