文字的循环闪动特效-JS特效-爱易网页

文字的循环闪动特效

日期：2014-05-18　浏览次数：20167 次

以下是程序代码

// Convert a 24bit number to hex
function toHex(n)
{
    return (enHex((0xf00000 & n) >> 20) +
            enHex((0x0f0000 & n) >> 16) +
            enHex((0x00f000 & n) >> 12) +
            enHex((0x000f00 & n) >>  8) +
            enHex((0x0000f0 & n) >>  4) +
            enHex((0x00000f & n) >>  0))
}
// Convert a six character hex to decimal
function toDecimal(hexNum)
{
    var tmp = ""+hexNum.toUpperCase()
    while (tmp.length < 6) tmp = "0"+tmp
    return ((deHex(tmp.substring(0,1)) << 20) +
            (deHex(tmp.substring(1,2)) << 16) + 
            (deHex(tmp.substring(2,3)) << 12) +
            (deHex(tmp.substring(3,4)) << 8) +
            (deHex(tmp.substring(4,5)) << 4) +
            (deHex(tmp.substring(5,6))))
}
///////////////////Shimmering Links/////////////////////
//global variables
var hoverColour
var numLinks;
var rate;
var numFadeLevels;
var bgR;
var bgG;
var bgB;
var currR;
var currG;
var currB;
var count;
var fadeOut;
var continuous;
var newColour;
var tID;
var redInterval;
var greenInterval;
var blueInterval;
function initLinks(mouseOverColour, numberOfLinks, fadeOutColour)
{
 hoverColour = mouseOverColour;
 numLinks = numberOfLinks;
 rate = 1;
 numFadeLevels = 30;
 function initArray(theArray, length, val)
 {
  for(i=0;i<length;i++)
  {
   theArray[i] = val;
  }
 }
 bgR = '0000' + fadeOutColour.substring(1,3)
 bgG = '0000' + fadeOutColour.substring(3,5)
 bgB = '0000' + fadeOutColour.substring(5,7)
 currR = new Array(numLinks);
 currG = new Array(numLinks);
 currB = new Array(numLinks);
 count = new Array(numLinks);
 fadeOut = new Array(numLinks);
 continuous = new Array(numLinks);
 newColour = new Array(numLinks);
 tID = new Array(numLinks);
 redInterval = toDecimal(bgR) / numFadeLevels;
 greenInterval = toDecimal(bgG) / numFadeLevels;
 blueInterval = toDecimal(bgB) / numFadeLevels;
 initArray(currR,numLinks,0);
 initArray(currG,numLinks,0);
 initArray(currB,numLinks,0);
 initArray(count,numLinks,0);
 initArray(fadeOut,numLinks,true);
 initArray(continuous,numLinks,true);
} 
function startFade(id)
{
 if(fadeOut[id] == true)
 { /*move colour towards background colour (increment)*/
  currR[id] += redInterval;
  currG[id] += greenInterval;
  currB[id] += blueInterval;
  newColour[id] = '#' + (toHex(currR[id])).substring(4,6) + (toHex(currG[id])).substring(4,6) + (toHex(currB[id])).substring(4,6);
  if(++count[id] == numFadeLevels)
  {
   fadeOut[id] = false;
  }
 }
 else
 {
  currR[id] -= redInterval;

currG[id] -= greenInterval;

currB[id] -= blueInterval;

newColour[id] = '#' + (toHex(currR[id])).substring(4,6) + (toHex(currG[id])).substring(4,6) + (toHex(currB[id])).substring(4,6);

if(--count[id] == 0)

{

fadeOut[id] = true;

}

if(continuous[id] == true)

{

document.getElementById(id).style.color = newColour[id];

}

else

{

document.getElementById(id).style.color = hoverColour;

}

clearTimeout(tID[id]);

tID[id]=setTimeout('startFade(' + id + ')', rate);

}

function continueFade(id)

{

continuous[id] = true;

}

function stopFade(id)

{

continuous[id] = false;

}

function StartTimers()

{ //set up an initial set of timers to start the shimmering effect

for(id=0; id<numLinks; id++)

{

t=setTimeout('startFade(' + id</div></div>

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