How to Add Rainbow Color Effect Links to Blogger:Digital Tech Inspiration

Rainbow color effect will give random colors to your link on mouse hover. Normally seen on mouse hover only a single color changes. But thanks to Dynamic Drive now we can easily

change several colors of our links. Once the code is applied to the blog/website, all links on each page exhibit a rainbow effect on mouse hover. This tutorial is very simple to follow and uses a JavaScript code inside Blogger.

To add Rainbow effect link to your blog/website follow some easy steps below:

STEP #1: Login to Blogger

STEP #2: Go to Dashboard>Template

STEP #3: Click on Edit HTML>Proceed

STEP #4: Press ( Ctrl+f ) to search for the below code.

</head>

STEP #5: And just above </head> paste the code below

//<![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 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 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>

Customization:

You can change the value of var rate = 20. This controls the speed with which links change color.

So execute steps correctly and you are done. Head to your blog and check the trick executed. So don't forget us. We will only survive with your generosity. Like, Share, Follow and Subscribe. If you are facing any problem with implementing these codes just comment below for help. Stay tuned for more posts.