Create special effects for JavaScript web pages with random number _ typical special effects

The special effects of JavaScript web page creation are extremely exciting in the web world with random numbers. If special effects are used properly, the web pages will certainly become more colorful. The following is my summary of special effects:
Beating text
Want to see the dancing text? Come on!
Code: First add <script language = "JavaScript"> between <〈! --
Function font11 ()
// Define the function font11 ()
{
Document. all. a1.style. fontSize = 16 +
Math. floor (Math. random () * 24); // call Math. the random () function generates a random number and uses Math. the floor () function is generated less than or equal to Math. the next number of random () * 24 to change the text size.
C1 = Math. floor (Math. random () * 256 );
C2 = Math. floor (Math. random () * 256 );
C3 = Math. floor (Math. random () * 256 );
Document. all. a1.style. color = "rgb (" + c1 + "," + c2 + "," + c3 + ")"; // same as above, change the text color (color using RGB)
Timer = setTimeout ('font11 () ', 200); // call the font11 () function every 200 milliseconds
}
---> </Script> 〉
Add onLoad = "font11 ();"
Add <span id = "a1"> Fei </span> 〉
Features: The text color and size can be changed randomly.
Extension: multiple groups of code can be added to the webpage. font11 represents different texts, including font12 and font13 in the future. The text can be represented as different texts.
Fade in and out
As time passes, the image will change from fuzzy to clear.
Code: First add <script language = "JavaScript"> between <〈! --
Mark = 0;
Function tupian () // CREATE function tupian ()
{
If (photo. filters. alpha. opacity <10)
// When the image transparency is less than 10
Mark = 1;
If (photo. filters. alpha. opacity> 98)
// When the image transparency is greater than 98
Mark =-1;
Step = 2 * mark;
Photo. filters. alpha. opacity + = step;
// Transparent value counter Accumulation
SetTimeout ('tupian () ', 20 );
// Execute the program every 20 milliseconds
}
---> </Script> 〉
Add id = "photo" and style = "filter: alpha (opacity = 0;)" to the image attributes ;)"
Finally, add the script after the image code 〉〈! --
Tupian ();
---> </Script> 〉
Feature: The image fades in and out cyclically.
The code in this article is very simple and I have explained all the points to be explained.