Cara Membuat Tulisan Berjalan ( Pelangi)

Di sini tulisan yang ingin di beri efek pelangi berjalan

Efek tulisan pelangi ini saya ambil dari blog Aku Punya dot Com, kemudian saya tambahkan sedikit kode agar bisa berjalan dan muncullah tulisan pelangi berjalan ini. Langsung saja praktekkan. Caranya sangat mudah.

• Login ke blog Anda dan pilih RANCANGAN. Kemudian pilih EDIT HTML.
• Jangan lupa download template blog Anda terlebih dahulu. Centang EXPAND TEMPLATE WIDGET.
• Copy dan letakkan kode berikut sebelum kode </head>.
<script type="text/javascript"> <!-- Begin /* * Notes on hue * * This script uses hue rotation in the following manner: * hue=0 is red (#FF0000) * hue=60 is yellow (#FFFF00) * hue=120 is green (#00FF00) * hue=180 is cyan (#00FFFF) * hue=240 is blue (#0000FF) * hue=300 is magenta (#FF00FF) * hue=360 is hue=0 (#FF0000) * * Notes on the script * * This script should function in any browser that supports document.getElementById * It has been tested in Netscape7, Mozilla Firefox 1.0, and Internet Explorer 6 * * Accessibility * * The script does not write the string out, but rather takes it from an existing * HTML element. Therefore, users with javascript disabled will not be adverely affected. * They just won't get the pretty colors. */ /* * splits par.firstChild.data into 1 span for each letter * ARGUMENTS * span - HTML element containing a text node as the only element */ function toSpans(span) { var str=span.firstChild.data; var a=str.length; span.removeChild(span.firstChild); for(var i=0; i<a; i++) { var theSpan=document.createElement("SPAN"); theSpan.appendChild(document.createTextNode(str.charAt(i))); span.appendChild(theSpan); } } function RainbowSpan(span, hue, deg, brt, spd, hspd) { this.deg=(deg==null?360:Math.abs(deg)); this.hue=(hue==null?0:Math.abs(hue)%360); this.hspd=(hspd==null?3:Math.abs(hspd)%360); this.length=span.firstChild.data.length; this.span=span; this.speed=(spd==null?50:Math.abs(spd)); this.hInc=this.deg/this.length; this.brt=(brt==null?255:Math.abs(brt)%256); this.timer=null; toSpans(span); this.moveRainbow(); } RainbowSpan.prototype.moveRainbow = function() { if(this.hue>359) this.hue-=360; var color; var b=this.brt; var a=this.length; var h=this.hue; for(var i=0; i<a; i++) { if(h>359) h-=360; if(h<60) { color=Math.floor(((h)/60)*b); red=b;grn=color;blu=0; } else if(h<120) { color=Math.floor(((h-60)/60)*b); red=b-color;grn=b;blu=0; } else if(h<180) { color=Math.floor(((h-120)/60)*b); red=0;grn=b;blu=color; } else if(h<240) { color=Math.floor(((h-180)/60)*b); red=0;grn=b-color;blu=b; } else if(h<300) { color=Math.floor(((h-240)/60)*b); red=color;grn=0;blu=b; } else { color=Math.floor(((h-300)/60)*b); red=b;grn=0;blu=b-color; } h+=this.hInc; this.span.childNodes[i].style.color="rgb("+red+", "+grn+", "+blu+")"; } this.hue+=this.hspd; } // End --> </script>
• Klik SAVE.
• Langkah selanjutnya adalah memasukkan kode berikut ke dalam text/tulisan yang ingin diberi efek pelangi berjalan.
<div align="center" style="width: 30%;"> <marquee><h4 id="r1"> Di sini tulisan yang ingin di beri efek pelangi berjalan</h4> </marquee> </div> <script type="text/javascript"> var r1=document.getElementById("r1"); //get span to apply rainbow var myRainbowSpan=new RainbowSpan(r1, 0, 360, 255, 50, 18); //apply static rainbow effect myRainbowSpan.timer=window.setInterval("myRainbowSpan.moveRainbow()", myRainbowSpan.speed); </script>

Selesai dan lihat hasilnya.
Selamat belajar dan jangan lupa komentarnya ya!!

Sumber: http://aku-punya.com/cara-membuat-text-tulisan-pelangi.html