王刚博客
逐字打印后文字消失，然后整体出现，整个过程随机颜色效果。
<!doctype html>
<html>
<head>
<title>颜色变幻的欢迎词</title>
<body onLoad=”loadText()”>
<Script language=”JavaScript”>
var someText = “美肤堂欢迎您，请多多指教！”;
var aChar;
var aSentence;
var i=0;
var colors = new Array(“FF0000″,”FFFF66″,”FF3399″,”00FFFF”,”FF9900″,”00FF00″);
var aColor;function loadText()
{
aColor = colors[Math.floor(Math.random()*colors.length)];
aChar = someText.charAt(i);
if (i == 0)
aSentence = aChar;
else {
aSentence=””;
for (j=0;j<=i;j++){
aSentence+=” ”
}
aSentence += aChar;
}
if (i < 50) i++;
if(i<someText.length){
if (document.all)
{
textDiv.innerHTML= “<font color=’#”+aColor+”‘ face=’Tahoma’ size=’7′><i>”+aSentence+”</i>”;
setTimeout(“loadText()”,500);
}
else if (document.layers)
{
document.textDiv.document.write(“<font color=’#”+aColor+”‘ face=’Tahoma’ size=’5′><i>”+aSentence+”</i>”);
document.textDiv.document.close();
setTimeout(“loadText()”,500);
}
else
if (document.getElementById)
{
document.getElementById(“textDiv”).innerHTML = “<font color=’#”+aColor+”‘face=’Tahoma’size=’5’><i>”+aSentence+”</i>”;
setTimeout(“loadText()”,500);
}
}
else {
if (document.all)
{
textDiv.innerHTML= “<font color=’#”+aColor+”‘ face=’Tahoma’ size=’7′><i>”+someText+”</i>”;
setTimeout(“loadText()”,500);
}
else if (document.layers)
{
document.textDiv.document.write(“<font color=’#”+aColor+”‘ face=’Tahoma’size=’5’><i>”+someText+”</i>”);
document.textDiv.document.close();
setTimeout(“loadText()”,500);
}
else if (document.getElementById)
{
document.getElementById(“textDiv”).innerHTML = “<font color=’#”+aColor+”‘face=’Tahoma’size=’5’><i>”+someText+”</i>”;
setTimeout(“loadText()”,500);
}
}}
</SCRIPT>
<div id=”textDiv”></div>
</body>
JS中的闭包及闭包函数的实现
