In practice, hex in HTML is used only when defining colors, or when referencing a character not in the typical character set (ie. not on the keyboard.)
Hexadecimal is a number system based off the number 16, rather than the typical decimal system, which is based off of ten. This means that the columns in hex are representative of a 16 base. Because decimal only has 10 digits (0-9) hex has to fill in the other 6 spaces using letters (which are traditionally capitalized, although HTML doesn't much care.) Counting in hexadecimal, therefore, goes like this.
1 One
2 Two
3 Three
4 Four
5 Five
6 Six
7 Seven
8 Eight
9 Nine
A Ten
B Eleven
C Twelve
D Thirteen
E Fourteen
F Fifteen
In the case of colors, the hexadecimal triplet is actually 3 sets of number, each 2 hex digits long. So the color red, #FF0000 is actually an RGB value of Red: FF Green: 00 and Blue: 00.
To convert from hex to decimal, you take the first column and simply convert. The second column to the left is representing 16s (much like the tens column in decimal) so you take that number and multiply by 16. Then you add the two together. From the prior example:
FF
The rightmost F stands for 15. The second F stands for 15 * 16^1 (or just 16). That's the same as 240 in decimal. Then we add the two column together. That gives us a decimal value for red of 15 + 240 or 255.
If we had a third column, then we'd simply multiply that value by 16^2. A Fourth would get multiplied by 16^3, and so on.
Here's an example:
#BAD1
We start with the value for the rightmost column, which is 1.
D is the hex value for 13. It's the first column from the right, so we multiply by 16^1 (which is just 16) and get 16 * 13, or 208.
A is the hex value for 10. Because this is the third column, we multiply by 16^2, or 256. 256 * 10 is 2,560.
B is hex for 11. It's the fourth column, so we increment the exponent again. 11 * 16^3, or 11 * 4096 = 45,056.
Now we add the columns together. 45056 + 2560 + 208 + 1 = 47,825.
While this is a bit awkward and complicated for us, it's a snap for the computer. In fact, the machine is constantly taking all these numbers down to binary first, then going back to decimal (this is where "roundoff error" comes from.)
Hex is used because it's a lot more succinct. As you can see, I represented a 5 digit decimal number in only 4 hexadecimal digits.
In the end, however, it's still just a number. Don't let it scare you :)
HTML does work in emails but to varying degrees. The name of the game with HTML and emails is testing, testing, testing. Unfortunately each reader interprets the HTML differently so you have to be very specific in your coding. Be warned that css doesn't work well in emails and should only be used inline
A large number of technologies are expanding what HTML could not do. JavaScript, Hibernate, Struts etc could work with HTML.
HTML markup tags provide formatting instructions to a browser. An HTML document tells the browser how to display the content on a webpage.
Yes it does. That is how client side validation of html control is possible using javascript
HTML was originally intended to do the same work as now. It was intended to create web pages interactive.
The hex code is a representation of the color in hexadecimal format. Hexadecimal is a base-16 number system that uses the numbers 0 to 9 and the letters A to F to represent values. The hex code is also known as HTML color code. All colors available in HTML have a corresponding hex color code. The hex code for the color blue is #0000ff. The hex color code for the color red is #ff0000.
There are a number of websites that give information about HTML colors. These include HTML Color Codes, Wikipedia, Color Scheme Designer and Color Hex.
HEX colors are codes used to represent different colors when using technical languages such as HTML or CSS. More information on HEX colors and there uses can be found from technical support sites such as w3schools.
See http://www.fileformat.info/info/unicode/char/10c5/index.htm . The Unicode value U+10C5. The HTML hex entity is Ⴥ .
Hex is used to represent computer addresses, as well as colors in HTML. You do not need to know how to multiply in hex integers, merely understand and be able to read them. Hex is also useful in being able to tell what the representation of a signed integer actually is in binary.
You can work on HTML in Notepad or Notepad++. These are text editors which understand HTML.
NO HTML does not work in PowerPoint. Power Point is for making slide shows and HTML is a web programming language.
HTML cannot work without it's tags. It uses tags for it's scripting work.
The people not into web-designing do not need HTML to work. Only web designers are in the need of that.
It doesn't
No. HTTP is HyperText Transfer Protocol, which is the protocol that web pages work on. HTML needs HTTP for it to work. HTTP is not code for a web page; it is not HTML.
Javascript can change how HTML will work, alike how CSS makes HTML look flashy.