JavaScript Web making special effects with random numbers _ typical effects

The network world is splendid incomparable, the gorgeous page if uses the special effect reasonably, certainly will be enriched many. Here is my summary of the effects:
Bounce text
Want to see the words that can Dance? Come on!
Code: Add 〈script language= "JavaScript" first between 〈head〉 and 〈/head〉
〈!--
function font11 ()
Define function font11 ()
{
document.all.a1.style.fontsize=16+
Math.floor (Math.random () *24); Call the Math.random () function to produce a random number, and then use the Math.floor () function to produce the next number less than or equal to Math.random () *24 to change the size of the text
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+") "; Ditto, change the color of the text (using RGB color palette)
Timer=settimeout (' font11 () ', 200); Call font11 () function once every 200 milliseconds
}
---〉〈/script〉
Then add onload= "font11 () in 〈body〉";
Finally in need place add 〈span id= "A1" Fly 〈/span〉
Features: text color and size can be random changes.
Extension: You can add more than one set of code in a Web page, where Font11 represent different words, Font12, Font13, and so on, and the text can be different for each.
Picture Fade in
Over time, the picture also loops from blur to clear change.
Code: Add 〈script language= "JavaScript" first between 〈head〉 and 〈/head〉
〈!--
mark=0;
function Tupian ()//Create Functions Tupian ()
{
if (photo.filters.alpha.opacity〈10)
When the picture transparency is less than 10 o'clock
mark=1;
if (photo.filters.alpha.opacity〉98)
When the picture transparency is greater than 98 o'clock
Mark=-1;
Step=2*mark;
Photo.filters.alpha.opacity+=step;
Transparency Value Counter Cumulative
SetTimeout (' Tupian () ', 20);
Every 20 milliseconds, the program executes once.
}
---〉〈/script〉
Then add id= "Photo" and style= "Filter:alpha (opacity=0;)" to the picture attributes.
Finally, add 〈script〉〈 to the back of the picture code!--
Tupian ();
---〉〈/script〉
Features: Picture loops fade in and out.
The code in this article is very simple, and I have an explanation of where to explain it.