HTML5 & CSS3 Primer FAQ

Frequently Asked Questions

The questions listed here are questions your peers have asked.

Q: What is a BOM?

A: It is the byte-order mark (BOM) in HTML. At the beginning of a page that uses a Unicode character encoding you may find some bytes that represent the Unicode code point U+FEFF BYTE ORDER MARK (abbreviated as BOM).

Q: Why is it that when I go to the website, the url is ... http://students.business.wayne.edu/aa1111/HTML_Projects/Project 1/Project 1.html ... but when I copy and paste it, it changes to ... http://students.business.wayne.edu/aa1111/HTML_Projects/Project%201/Project%201.html

A: The computer doesnot like " " (blank spaces) -- so, it converts this "special character" into its hexidecimal equivalent. So, the %20 indicates that the spot between the t in Project and the 1 at the end is actually a blank space. We will discuss "Symbols" in future lectures and will see the other "character codes" that potentially could be inserted.

Note that the keyboard gives you approximately 100 characters -- yet the computer allows approximately 65,000 characters -- so to store and recognize these additional characters, the computer uses the hexidecimal equivalent.

The wonderful and terrifying implications of computers that can learn

What happens when we teach a computer how to learn? Technologist Jeremy Howard shares some surprising new developments in the fast-moving field of deep learning, a technique that can give computers the ability to learn Chinese, or to recognize objects in photos, or to help think through a medical diagnosis. (One deep learning tool, after watching hours of YouTube, taught itself the concept of “cats.”) Get caught up on a field that will change the way the computers around you behave … sooner than you probably think.

Machine Learning