JQuery动态适时改变字体的颜色，Ajax的效果类似，在文本框输入文字，再选择色块，输入的文字就会变成色块标示的颜色值，很不错的效果吧。如果运行有错，请刷新一次页面即可。
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3c.org/1999/xhtml">
<head>
<title>JQuery动态改变字体颜色</title>
<meta charset="gb2312" />
<style type="text/css">
h1 {
font:bold 15px/19px Georgia, serif;
}
p {margin:0;}
#colorselections a {
border:2px solid #fff;
margin-right:4px;
display:block;
float:left;
}
a img {
border:1px solid #fff;
width:22px;
height:22px;
vertical-align:bottom;
}
#colorselections{zoom:1}
#colorselections a.on {
border:2px solid #d5680d;
}
#previewer {
margin:26px 0 20px 0;
padding:6px;
clear:left;
font:bold 19px/25px Verdana;
border:1px solid #ccc;
width:80%;
}
</style>
<script type="text/javascript" src="js/jquery1.3.2.js"></script>
<script type="text/javascript">
$(function(){
$("#inputText").keyup(function(){
$("#previewer").empty();
$("#previewer").text($(this).attr("value"));
});
});
$(function(){
$("#colorselections a").click(function(){
$(this).addClass("on").siblings().removeClass("on");
$("#previewer").css("color",$(this).css("background-color"))
});
});
</script>
</head>
<body>
<h1>请输入文字</h1>
<input type="text" id="inputText" value="" />
<h1>请选择颜色</h1>
<p>
<span id="colorselections">
<a href="#" style="background-color:#000000;" class="on">
<img src="/jscss/demoimg/201006/space.gif" class="colorbox" alt="Black" />
</a>
<a href="#" style="background-color:#003399;" class="">
<img src="/jscss/demoimg/201006/space.gif" class="colorbox" alt="Light Blue" />
</a>
<a href="#" style="background-color:#5E5E5E;" class="">
<img src="/jscss/demoimg/201006/space.gif" class="colorbox" alt="Medium Gray" />
</a>
<a href="#" style="background-color:#00524E;" class="">
<img src="/jscss/demoimg/201006/space.gif" class="colorbox" alt="Dark Teal" />
</a>
<a href="#" style="background-color:#258B86;" class="">
<img src="/jscss/demoimg/201006/space.gif" class="colorbox" alt="Light Teal" />
</a>
<a href="#" style="background-color:#DA7E33;" class="">
<img src="/jscss/demoimg/201006/space.gif" class="colorbox" alt="Orange" /></a>
<a href="#" style="background-color:#198541;" class="">
<img src="/jscss/demoimg/201006/space.gif" class="colorbox" alt="Green" />
</a>
</span>
</p>
<br clear="both" />
<p id="previewer"></p>
</body>
</html>