trimpath 前端模板引擎
Trimpath JavaScript 是个轻量级的，基于JavaScript的，跨浏览器，采用APL/GPL开放源代码协议的，可以让你轻松进行基于模板编程方式的纯JS引擎。
它有如下的特点：
1、采用标准的JavaScript编写，支持跨浏览器
2、模板语法类似于：FreeMarker，Velocity,Smarty
3、采用简易的语言来描述大段的字串以及Dom/DHTML操作
采用该引擎，可以让它来完全处理View方面的事情，服务端Module直接输出Data就可以。让你的MVC模式连成一体，而且由于View由浏览器来处 理，大大减少了服务器的负担，用来构建Ajax技术的网络信息系统应用是一个非常好的选择。下面将通过翻译该站的文章来给大家介绍这个JST引擎的使用。
官方网站：
http://code.google.com/p/trimpath/wiki/JavaScriptTemplates
首先，在html页面上加载trimpath的js文件
<html>
<head>
<script language="javascript" src="trimpath-template-1.0.38.js"></script>
</head>
</html>
接下来，创建一个标准的javascript数据,比如是数组或者是objects
<script language="javascript">
var data = {
products : [ { name: "mac", desc: "computer",price: 1000, quantity: 100, alert:null },
{ name: "ipod", desc: "music player",price: 200, quantity: 200, alert:"on sale now!" },
{ name: "cinema display", desc: "screen", price: 800, quantity: 300, alert:"best deal!" } ],
customer : { first: "John", last: "Public", level: "gold" }
};
</script>
然后，我们创建一个JST模板来读取上面的数据，同时把模板的样式设置为不可见
<textarea id="cart_jst" style="display:none;">
Hello ${customer.first} ${customer.last}.<br/>
Your shopping cart has ${products.length} item(s):
<table>
<tr>
<td>Name</td><td>Description</td>
<td>Price</td><td>Quantity & Alert</td></tr>
{for p in products}
<tr>
<td>${p.name|capitalize}</td>
<td>${p.desc}</td>
<td>$${p.price}</td><td>${p.quantity} : ${p.alert|default:""|capitalize}</td>
</tr>
{forelse}
<tr>
<td colspan="4">No products in your cart.</td>
</tr>
{/for}
</table>
{if customer.level == "gold"}
We love you! Please check out our Gold Customer specials!
{else}
Become a Gold Customer by buying more stuff here.
{/if}
</textarea>
以下的代码展示怎样使用JST来处理模板
<script language="javascript">
// The one line processing call...
var result = TrimPath.processDOMTemplate("cart_jst", data);
// Voila! That's it -- the result variable now holds
// the output of our first rendered JST.
// Alternatively, you may also explicitly parse the template...
//var myTemplateObj = TrimPath.parseDOMTemplate("cart_jst");
// Now, calls to myTemplateObj.process() won't have parsing costs...
//var result = myTemplateObj.process(data);
//var result2 = myTemplateObj.process(differentData);
// Setting an innerHTML with the result is a common last step...
document.getElementById('test').innerHTML = result;
// You might also do a document.write() or something similar...
</script>
页面展示的结果为：
Hello John Public. Your shopping cart has 3 item(s): Name Description Price Quantity & Alert MAC computer $1000 100 : IPOD music player $200 200 : ON SALE NOW! CINEMA DISPLAY screen $800 300 : BEST DEAL! We love you! Please check out our Gold Customer specials!
附件是以上描述的例子，供有兴趣的童鞋下载~~~