要完成此效果需要两个步骤
第一步：把如下代码加入到<body>区域中
<SCRIPT>
<!--
var mes = new Array()
mes[0]="欢迎光临Typhoon Start "
mes[1]="JavsScript Fairyland "
mes[2]="这里有大量充实的JS脚本 "
mes[3]="还有其它经典软件及教程 "
mes[4]="再次感谢您的光临 "
var maxtextlength=30
// 下以为路线，中间不能有空格
var path= new
Array(548,316,581,296,598,257,577,215,559,202,503,193,464,203,446,222,448,255,468,274,500,280,526
,267,541,237,537,209,526,187,499,161,462,146,412,133,368,129,326,132,293,142,272,159,250,184,239,
204,234,213,226,230,201,253,186,259,165,265,136,268,110,270,83,267,58,260,36,243,26,229,22,210,24
,191,29,174,39,163,56,154,76,150,96,149,110,148,135,152,165,156,196,165,208,172,231,181,254,192,2
80,203,305,210,339,210,366,206,389,195,405,182,419,167,428,148,442,116,448,80,443,41,401,8,347,0,
300,11,280,30,256,50,230,58,198,61,169,56,141,50,113,45,87,36,70,29,52,24,28,18,7,15)
// 第二个信息间隔多久出现
var stoptime=2
// 字体的属性
var textfont="宋体"
var textsize=14
var textcolor="33ff33"
// 字符的间距，如果你改变字体的大小也要改变这里
var letterspace=14
var tickerleft=path[path.length-2]
var tickertop=path[path.length-1]
var timer
var finalxpos=tickerleft
var i_mes=0
var message=""
var i_path=0
var stoptimemilli=stoptime*stoptime+1000
var pathx= new Array()
if (document.layers) {
if (textsize>20) {textsize=6}
else if (textsize>20) {textsize=5}
else if (textsize>14) {textsize=4}
else if (textsize>10) {textsize=3}
else if (textsize>8) {textsize=2}
else if (textsize<=7) {textsize=1}
}
var ii=0
for (i=0;i<=path.length-1;i=i+2) {
pathx[ii]=path[i]
ii++
}
ii=0
var pathy= new Array()
for (i=1;i<=path.length-1;i=i+2) {
pathy[ii]=path[i]
ii++
}
var xpos=new Array()
for (i=0;i<=maxtextlength;i++) {
xpos[i]=5000
}
var ypos=new Array()
for (i=0;i<=maxtextlength;i++) {
ypos[i]=5000
}
function makesnake() {
if (i_path<=pathx.length-1) {
for (i=message.length-1; i>=1; i--) {
xpos[i]=xpos[i-1]
ypos[i]=ypos[i-1]
}
xpos[0]=pathx[i_path]
ypos[0]=pathy[i_path]
if (document.all) {
for (i=0; i<message.length-1; i++) {
var thisspan = eval("document.all.span"+(i)+".style")
thisspan.posLeft=xpos[i]
thisspan.posTop=ypos[i]
}
}
if (document.layers) {
for (i=0; i<message.length-1; i++) {
var thisspan = eval("document.span"+i)
thisspan.left=xpos[i]
thisspan.top=ypos[i]
}
}
i_path++
timer=setTimeout("makesnake()",20)
}
else {
clearTimeout(timer)
endposition()
}
}
function endposition() {
if (document.all) {
for (i=0; i<message.length-1; i++) {
var thisspan = eval("document.all.span"+(i)+".style")
thisspan.posLeft=tickerleft+finalxpos
thisspan.posTop=tickertop
finalxpos+=letterspace
}
}
if (document.layers) {
for (i=0; i<message.length-1; i++) {
var thisspan = eval("document.span"+i)
thisspan.left=tickerleft+finalxpos
thisspan.top=tickertop
finalxpos+=letterspace
}
}
timer=setTimeout("clearmessage()",stoptimemilli)
}
function clearmessage() {
finalxpos=tickertop
i_path=0
for (i=0;i<=maxtextlength;i++) {
xpos[i]=5000
}
if (document.all) {
for (i=0;i<=maxtextlength;i++) {
var thisspan = eval("document.all.span"+i)
thisspan.innerHTML=" "
var thisspan = eval("document.all.span"+(i)+".style")
thisspan.posLeft=xpos[i]=5000
}
}
if (document.layers) {
for (i=0;i<=maxtextlength;i++) {
var thisspan = eval("document.span"+i+".document")
thisspan.write("
")
thisspan.clear()
thisspan = eval("document.span"+i)
thisspan.left=5000
}
}
timer=setTimeout("changemessage()",2000)
}
function changemessage() {
var messa=mes[i_mes]
message=messa.split("")
if (document.all) {
for (i=0;i<=message.length-1;i++) {
var thisspan = eval("document.all.span"+i)
thisspan.innerHTML="<p
style='font-family:"+textfont+";font-size:"+textsize+";color:"+textcolor+"'>"+message[i]+"
"
}
}
if (document.layers) {
for (i=0; i<message.length-1; i++) {
var thisspan=eval("document.span"+i+".document")
thisspan.write("<font size="+textsize+" color="+textcolor+"
face="+textfont+">"+message[i]+"
")
thisspan.clear()
}
}
i_mes++
if (i_mes>=mes.length) {i_mes=0}
finalxpos=tickertop
i_path=0
timer=setTimeout("makesnake()",1000)
}
// - End of JavaScript - -->
</SCRIPT>
<STYLE>.spanstyle {
LEFT: 5000px; POSITION: absolute; VISIBILITY: visible
}
</STYLE>
<SCRIPT>
<!-- Beginning of JavaScript -
for (i=0;i<=maxtextlength;i++) {
document.write("<span id='span"+i+"' class='spanstyle'>")
document.write(message)
document.write("</span>")
}
// - End of JavaScript - -->
</SCRIPT>
第二步：把“onload=changemessage()”加在<body>标记里
例如：<body onload=changemessage()>
