Multi-Color Hover On Link

November 11, 2009

Multi-Color Hover On Link

Kaedah yang menarik untuk kesan hover pada link. Cara mudah untuk diaplikasikan.
Pergi ke Blogger Dashboard >> Layout >> Edit HTML dan anda cari tag

</head>

dan kemudiannya anda masukkan kod di bawah SEBELUM tag di atas:-

<script type='text/javascript'>

//<![CDATA[

var rate = 20;

if (document.getElementById)
window.onerror=new Function("return true")

var objActive; // The object which event occured in
var act = 0; // Flag during the action
var elmH = 0; // Hue
var elmS = 128; // Saturation
var elmV = 255; // Value
var clrOrg; // A color before the change
var TimerID; // Timer ID

if (document.all) {
document.onmouseover = doRainbowAnchor;
document.onmouseout = stopRainbowAnchor;
}
else if (document.getElementById) {
document.captureEvents(Event.MOUSEOVER | Event.MOUSEOUT);
document.onmouseover = Mozilla_doRainbowAnchor;
document.onmouseout = Mozilla_stopRainbowAnchor;
}

function doRainbow(obj)
{
if (act == 0) {
act = 1;
if (obj)
objActive = obj;
else
objActive = event.srcElement;
clrOrg = objActive.style.color;
TimerID = setInterval("ChangeColor()",100);
}
}

function stopRainbow()
{
if (act) {
objActive.style.color = clrOrg;
clearInterval(TimerID);
act = 0;
}
}

function doRainbowAnchor()
{
if (act == 0) {
var 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 != '') {
objActive = obj;
act = 1;
clrOrg = objActive.style.color;
TimerID = setInterval("ChangeColor()",100);
}
}
}

function stopRainbowAnchor()
{
if (act) {
if (objActive.tagName == 'A') {
objActive.style.color = clrOrg;
clearInterval(TimerID);
act = 0;
}
}
}

function Mozilla_doRainbowAnchor(e)
{
if (act == 0) {
obj = e.target;
while (obj.nodeName != 'A' && obj.nodeName != 'BODY') {
obj = obj.parentNode;
if (obj.nodeName == 'A' || obj.nodeName == 'BODY')
break;
}

if (obj.nodeName == 'A' && obj.href != '') {
objActive = obj;
act = 1;
clrOrg = obj.style.color;
TimerID = setInterval("ChangeColor()",100);
}
}
}

function Mozilla_stopRainbowAnchor(e)
{
if (act) {
if (objActive.nodeName == 'A') {
objActive.style.color = clrOrg;
clearInterval(TimerID);
act = 0;
}
}
}

function ChangeColor()
{
objActive.style.color = makeColor();
}

function makeColor()
{
// Don't you think Color Gamut to look like Rainbow?

// HSVtoRGB
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).toString(16);
elmG = Math.floor(elmG).toString(16);
elmB = Math.floor(elmB).toString(16);
if (elmR.length == 1) elmR = "0" + elmR;
if (elmG.length == 1) elmG = "0" + elmG;
if (elmB.length == 1) elmB = "0" + elmB;

elmH = elmH + rate;
if (elmH >= 360)
elmH = 0;

return '#' + elmR + elmG + elmB;
}

//]]>

</script>

Untuk demo, sila klik SINI

**NOTA** Untuk var=20, anda boleh ubah nilai 20 itu mengikut kesesuaian anda yang mana semakin besar nilai itu semakin laju kesan tersebut dan begitulah sebaliknya. Saya mencadangkan nilai 100 sebagai nilai yang sesuai. Terpulang kepada anda. Selamat Mencuba!

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