How can I check if the browser support HTML5 file upload (FormData object)?

Question

How can I check if the browser support HTML5 file upload (FormData object)?

var fd = new FormData();

Following the answer from this post, b

Answer 1

You need to check if the browser supports the HTML5 file API. I do that by checking if the FileReader function is set, if it’s not set it means that the browser won’t support the file API.

// Check if window.fileReader exists to make sure the browser supports file uploads
if (typeof(window.FileReader) == 'undefined') 
    {
        alert'Browser does not support HTML5 file uploads!');
    }