一个简单的javascript前端模版引擎

(function(window,undefined){
var cache = {};
window.etic =  function (str, data){
if (!cache[str] ){
var tpl = $(str)[0].innerHTML

var fCon = 'var p = [];'

while (true){
var pst = tpl.indexOf('<?')
if (pst < 0) {
fCon += "p.push('"+ tpl.replace(/[\r\t\n]/g, " ") +"');return p.join('');"
break
}
var pend = tpl.indexOf('?>' ,pst)
var preHtml = tpl.substr(0,pst)
.replace(/[\r\t\n]/g, " ")
var scCon = tpl.substring(pst+2 , pend)
.replace(/\n/g,';')
tpl = tpl.substr(pend+2)
if ('=' == scCon.charAt(0) )
scCon = ";p.push("+ scCon.substr(1) +");"

fCon += "p.push('"+ preHtml +"');" + scCon

}
cache[str] =new Function('',fCon)

}
var fn = cache[str]
return data ? fn.apply( data ) :fn

}
})(this)

(function(window,undefined){
var cache = {};
window.etic =  function (str, data){
if (!cache[str] ){
var tpl = $(str)[0].innerHTML

tpl = tpl
.replace(/[\r\t\n]/g, " ")
.split("<\?").join("\t")
.replace(/((^|\?>)[^\t]*)'/g, "$1\r")
.replace(/\t=(.*?)\?>/g, "',$1,'")
.split("\t").join("');")
.split("\?>").join("p.push('")
.split("\r").join("\\'")
cache[str] = new Function("",
"var p=[];p.push('" + tpl + "');return p.join('');");
}
return data ? cache[str].apply( data ): fn

}
})(this)

<script type=text/plain id=ul>
<ul>
title: <?= this.title ?>
<? var i = 0 ,j = this.ul.length;
for (;i < j ;i++){
?>
<li>= <?= this.ul[i] ?></li>
<? }?>

</ul>

</script>

var dul = {ul:['a','b'] , title:'tt'}
console.log(etic('#ul' ,dul))

<ul>  title: tt     <li>= a</li>     <li>= b</li>    </ul>