How can I get a file's upload size using simple Javascript?

Question

I have upload file functionality on one of the page. I check for the extension of the file using JavaScript. Now i want to restrict the user from uploading file greater than

Answer 1

Other that aquiring the filename there is no way for you to find out any other details about the file in javascript including its size.

Instead you should configure server-side script to block an oversized upload.