<style>
.CodeSamp {
 PADDING-RIGHT: 0.5em; MARGIN-TOP: 1em; PADDING-LEFT: 0.5em; FONT-SIZE: 8p; MARGIN-BOTTOM: 1em; PADDING-BOTTOM: 0.5em; MARGIN-LEFT: 0pt; PADDING-TOP: 0.5em; FONT-FAMILY: "Courier New"; BACKGROUND-COLOR: #eeeeee;width: 480px;overflow:hidden;border: 1px solid #888888;
}
textarea {
border-width: 1; border-color: #000000;font-size: 12px;FONT-FAMILY: "Tahoma", "MS Shell Dlg";
}
</style>

<TEXTAREA name=phx cols=65 rows=12>
[i][b][color=blue]blue[/color][/b][/i]

[html][color=red]te
st[/color][/html]

[html][code]te
st[/code][/html]

[code][html]te
st[/html][/code]</textarea>
<br><button onclick=show.innerHTML=UBBCode(phx.value,"html")>转换</button><br>
<div id=show style="border:1 solid skyblue;width=500;font-size: 12px;FONT-FAMILY:
'Tahoma', 'MS Shell Dlg';
"></div>

<script>
strIcons = "1"  //允许笑脸转换
strSmile="1"   //同上
ImgName="em"
picurl="pic/"

function UBBCode(content,html){
st=new Date().getTime()
content=content.replace(/\[(\/)?phx_code\]/ig,"{$1phx_code}");
content=content.replace(/\[(\/)?phx_html\]/ig,"{$1phx_html}");
content="[phx_code]"+content+"[/phx_code]";         
content=content.replace(/(\[code\]([\s\S]+?)\[\/code\])/ig,"[/phx_code]$1[phx_code]");
content=content.replace(/\[phx_code\]([\s\S]*?)\[\/phx_code\]/ig,function($1,$2){if(html=="html"){return(HTMLCode($2));}else{return(trans($2));}});
content=content.replace(/\[code\](\r\n)?([\s\S]+?)\[\/code\]/ig,function($1,$2,$3){return("<PRE class=CodeSamp>"+DvbbsHtmlAn($3)+"</PRE>")});
content=content.replace(/\{(\/)?phx_code\}/ig,"[$1phx_code]");
content=content.replace(/\{(\/)?phx_html\}/ig,"[$1phx_html]");
alert('共耗时 '+eval(new Date().getTime()-st)+' ms');
return(content);
}

function HTMLCode(content){  
content="[phx_html]"+content+"[/phx_html]";   
content=content.replace(/(\[html\]([\s\S]+?)\[\/html\])/ig,"[/phx_html]$1[phx_html]");
content=content.replace(/\[phx_html\]([\s\S]*?)\[\/phx_html\]/ig,function($1,$2){return(trans($2))});
content=content.replace(/\[html\]([\s\S]+?)\[\/html\]/ig,function($1,$2){return("<span><TEXTAREA cols=95 rows=12>"+hencode($2)+"</TEXTAREA><br><INPUT onclick=runCode() type=button value=运行代码>[Ctrl+A 全部选择 提示：你可先修改部分代码，再按运行]</span>")});
return(content);
}

function hencode(fString){  //简单模拟server.htmlencode   ASP中不用这个
 fString = fString.replace(/&/ig,"&amp;")
 fString = fString.replace(/>/ig,"&gt;") //>
 fString = fString.replace(/</ig,"&lt;") //<
return fString;
}

function DvbbsHtmlAn(fString){

if(fString=="")return("");

fString=hencode(fString)

 fString = fString.replace(/\t/ig,"&nbsp;&nbsp;&nbsp;") //Tab
 fString = fString.replace(/"/ig,"&quot;")    //"
 fString = fString.replace(/'/ig,"&#39;")    //'
 fString = fString.replace(/\r/ig,"")     //回车是一个13+10
 fString = fString.replace(/\n\n/ig,"<P>")    // 
 fString = fString.replace(/\n/ig,"<BR>")    //换行

用js封装的时间设置器 用 onerror 获取错误信息