随机效果文本－定时的从一段文本中随机选择一个字符，改变颜色
<!doctype html public "-//w3c//dtd html 4.0 transitional//en">
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<head>
<script language="javascript">
<!--
function open () {return true;}
//-->
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<title>ripple text examples by mark boyle email mboil@hotmail.com</title>
</head>
<body bgcolor=green text="white" bgcolor="green" link="yellow" vlink="yellow"
alink="red">
<font color="yellow">
<script language="javascript">
var speed = 20;
var fulltext;
if(navigator.appname == "netscape")
document.write(<layer id="wds"></layer><br>);
if (navigator.appversion.indexof("msie") != -1)
document.write(<span id="wds"></span><br>);
function livetext()
{
fulltext="this is an example of random effect text"
var whichchar=math.round((math.random()*fulltext.length))
switch(whichchar){
case 0:
fulltext = <font color="red"> + fulltext.substring(0,1) + </font> + fulltext.substring
(1,fulltext.length);
break;
case fulltext.length:
fulltext = fulltext.substring(0,fulltext.length-1) + <font color="red"> + fulltext.substring
(fulltext.length-1,fulltext.length) + </font>;
break;
default:
fulltext =
fulltext.substring(0,whichchar) + <font color="violet"> +
fulltext.substring(whichchar,whichchar+1) + </font> +
fulltext.substring(whichchar+1,fulltext.length);
break;
}
if(navigator.appname == "netscape") {
size = "<font point-size=25pt>";
document.wds.document.write(size+<center> + fulltext + </center></font>);
document.wds.document.close();
}
if (navigator.appversion.indexof("msie") != -1){
wds.innerhtml = <center> + fulltext + </center><p>;
wds.style.fontsize=25px
}
settimeout("livetext()",speed);
}
livetext()
</script>
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</body>
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