JavaScript Functions for basename and dirname

Two JavaScript functions that mimic their PHP cousins.


function basename(path) {
     return path.replace(/.*\//, '');


function dirname(path) {
     return path.match(/.*\//);

Sample output

Input dirname() basename()
/folder/subfolder/file.ext /folder/subfolder/ file.ext
/folder/subfolder /folder/ subfolder
/file.ext file.ext /
file.ext file.ext null

Note: Unlike their PHP cousins, these functions do not support paths separated with backslashes.

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Creator of Surreal CMS and other web things. Follow me for tweets about JavaScript, CSS, and web programming.