Node.js get file extension
I believe you can do the following to get the extension of a file name.
var path = require('path')path.extname('index.html')// returns'.html'
Update
Since the original answer, extname() has been added to the path
module, see Snowfish answer
Original answer:
I'm using this function to get a file extension, because I didn't find a way to do it in an easier way (but I think there is) :
function getExtension(filename) { var ext = path.extname(filename||'').split('.'); return ext[ext.length - 1];}
you must require 'path' to use it.
another method which does not use the path module :
function getExtension(filename) { var i = filename.lastIndexOf('.'); return (i < 0) ? '' : filename.substr(i);}
// you can send full url herefunction getExtension(filename) { return filename.split('.').pop();}
If you are using express please add the following line when configuring middleware (bodyParser)
app.use(express.bodyParser({ keepExtensions: true}));