How can I get file extensions with JavaScript?

Question

See code:

var file1 = \"50.xsl\";
var file2 = \"30.doc\";
getFileExtension(file1); //returns xsl
getFileExtension(file2); //returns doc

function getFileExt         


        

Answer 1

Don't forget that some files can have no extension, so:

var parts = filename.split('.');
return (parts.length > 1) ? parts.pop() : '';