Disallow large file uploads

gistfile1.txt

// Disallows uploads over 2Mb
$(document).on('change', 'input[type=file]', function() {
    //this.files[0].size gets the size of your file.
    if (this.files[0].size > 2097152 || this.files[0].filesize > 2097152) {
        alert('Your file is too large (over 2Mb). Please use a smaller file.')
        $(this).wrap('<form>').closest('form').get(0).reset();
        $(this).unwrap();
    }
});