要完成此效果需要三个步骤
第一步：把如下代码加入到<head>区域中
<style>.spanstyle {
COLOR: #0066ff; FONT-FAMILY: 隶书; FONT-SIZE:
14pt; FONT-WEIGHT: normal; POSITION: absolute; TOP: -50px; VISIBILITY:
visible
}
</style>
第二步：把如下代码加入到<body>区域中
<script language="javascript">
var message="欢 迎 访 问 阿 里 西 西
!";
var x,y;
var step=12;
var flag=0;
message=message.split("");
var xpos=new Array();
for
(i=0;i<=message.length-1;i++) {
xpos[i]=-50;
}
var ypos=new Array();
for (i=0;i<=message.length-1;i++)
{
ypos[i]=-50;
}
function handlerMM(e) {
x = (document.layers) ? e.pageX :
document.body.scrollLeft+event.clientX+10;
y = (document.layers) ? e.pageY :
document.body.scrollTop+event.clientY;
flag=1;
}
function makesnake() {
if (flag==1 && document.all) {
for
(i=message.length-1; i>=1; i--)
{
xpos[i]=xpos[i-1]+step;
ypos[i]=ypos[i-1];
}
xpos[0]=x+step;
ypos[0]=y;
for (i=0; i<=message.length-1; i++) {
var thisspan =
eval("span"+(i)+".style");
thisspan.posLeft=xpos[i];
thisspan.posTop=ypos[i];
thisspan.color=Math.random()
* 255 * 255 * 255 + Math.random() * 255 * 255 + Math.random() *
255;
}
}
else if (flag==1 && document.layers) {
for
(i=message.length-1; i>=1; i--)
{
xpos[i]=xpos[i-1]+step;
ypos[i]=ypos[i-1];
}
xpos[0]=x+step;
ypos[0]=y;
for (i=0; i<message.length-1; i++) {
var thisspan =
eval("document.span"+i);
thisspan.left=xpos[i];
thisspan.top=ypos[i];
thisspan.color=Math.random()
* 255 * 255 * 255 + Math.random() * 255 * 255 + Math.random() *
255;
}
}
}
</script>
<script language="javascript">
for (i=0;i<=message.length-1;i++)
{
document.write("<span id='span"+i+"'
class='spanstyle'>");
document.write(message[i]);
document.write("</span>");
}
if (document.layers)
{
document.captureEvents(Event.MOUSEMOVE);
}
document.onmousemove =
handlerMM;
</script>
<script
language="javascript">
function
pageonload() {
makesnake();
window.setTimeout("pageonload();",
2);
}
</script>
第三步：把“onload=javascript:pageonload()”加在<body>标记里
例如：<body
onload=javascript:pageonload()>
