javascript - 改变文字链接的颜色

王朝html/css/js·作者佚名  2004-06-16
窄屏简体版  字體: |||超大  

//changelinkcolor.js

var rate = 20;

var obj;

var act = 0;

var elmH = 0;

var elmS = 128;

var elmV = 255;

var clrOrg;

var TimerID;

if (navigator.appName.indexOf("Microsoft",0) != -1 && parseInt(navigator.appVersion) >= 4)

{

Browser = true;

}

else

{

Browser = false;

}

if (Browser)

{

document.onmouseover = doRainbowAnchor;

document.onmouseout = stopRainbowAnchor;

}

function doRainbow()

{

if (Browser && act != 1)

{

act = 1;

obj = event.srcElement;

clrOrg = obj.style.color;

TimerID = setInterval("ChangeColor()",100);

}

}

function stopRainbow()

{

if (Browser && act != 0)

{

obj.style.color = clrOrg;

clearInterval(TimerID);

act = 0;

}

}

function doRainbowAnchor()

{

if (Browser && act != 1)

{

obj = event.srcElement;

while (obj.tagName != 'A' && obj.tagName != 'BODY')

{

obj = obj.parentElement;

if (obj.tagName == 'A' || obj.tagName == 'BODY')

break;

}

if (obj.tagName == 'A' && obj.href != '')

{

act = 1;

clrOrg = obj.style.color;

TimerID = setInterval("ChangeColor()",100);

}

}

}

function stopRainbowAnchor()

{

if (Browser && act != 0)

{

if (obj.tagName == 'A')

{

obj.style.color = clrOrg;

clearInterval(TimerID);

act = 0;

}

}

}

function ChangeColor()

{

obj.style.color = makeColor();

}

function makeColor()

{

if (elmS == 0)

{

elmR = elmV; elmG = elmV; elmB = elmV;

}

else

{

t1 = elmV;

t2 = (255 - elmS) * elmV / 255;

t3 = elmH % 60;

t3 = (t1 - t2) * t3 / 60;

if (elmH < 60)

{

elmR = t1; elmB = t2; elmG = t2 + t3;

}

else if (elmH < 120)

{

elmG = t1; elmB = t2; elmR = t1 - t3;

}

else if (elmH < 180)

{

elmG = t1; elmR = t2; elmB = t2 + t3;

}

else if (elmH < 240)

{

elmB = t1; elmR = t2; elmG = t1 - t3;

}

else if (elmH < 300)

{

elmB = t1; elmG = t2; elmR = t2 + t3;

}

else if (elmH < 360)

{

elmR = t1; elmG = t2; elmB = t1 - t3;

}

else

{

elmR = 0; elmG = 0; elmB = 0;

}

}

elmR = Math.floor(elmR);

elmG = Math.floor(elmG);

elmB = Math.floor(elmB);

clrRGB = '#' + elmR.toString(16) + elmG.toString(16) + elmB.toString(16);

elmH = elmH + rate;

if (elmH >= 360)

elmH = 0;

return clrRGB;

}

 
 
 
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