<script src="jquery.js" type="text/javascript"></script>
<script src="jquery-ui.js" type="text/javascript"></script>
<script src="tag-it.js" type="text/javascript"></script>
<link rel="stylesheet" type="text/css" href="jquery-ui.css">
<link href="jquery.tagit.css" rel="stylesheet" type="text/css">

#container{
width:400px;
}
input[type=submit]{
padding:8px;
}
/*定义边框*/
#singleFieldTags{
border:1px solid #b1c9dc;
background:#e7e3ca;
}
/*定义输入元素text*/
#singleFieldTags input{
background:#e7e3ca;
color:blue;
}
/*定义标签样式*/
#singleFieldTags li{
background:#e7e3ca;
border:1px solid #930;
color:red;
}
/*第一输入元素的父元素*/
#singleFieldTags .tagit-new{
border:none;
}

$(function(){
var sampleTags = ['c++', 'java', 'php', 'coldfusion', 'javascript', 'asp', 'ruby', 'python', 'c', 'scala', 'groovy', 'haskell', 'perl', 'erlang', 'apl', 'cobol', 'go', 'lua'];
$('#myTags').tagit({
singleField: true, 
singleFieldNode: $('#myTagsValues')
});
$('#singleFieldTags').tagit({
//输入提示
availableTags: sampleTags,
// 与赋值操作有关
singleField: true,
allowSpaces: true, //标签中是否允许空格
singleFieldNode: $('#mySingleField') //将值保存到mySingleField元素
});
$('#submit1').click(function(){
alert($('#myTagsValues').val());
});
$('#submit2').click(function(){
alert($('#mySingleField').val());
});
});

<div id="container">
<p><b>测试用例1</b></p>
<ul id="myTags">
</ul>
<input type="hidden" id="myTagsValues" />
<input type="submit" value="获取输入信息" id="submit1"/>
<P><b>测试用例2</b></P>
<p><b>绑定默认关键词，在添加关键词时允许空格</b></p>
<p>修改后的样式</p>
<ul id="singleFieldTags">
</ul>
<input name="tags" id="mySingleField" value="CSharp, jQuery" disabled="true">
<br />
<input type="submit" value="获取输入信息" id="submit2" />
</div>