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源代码网推荐
这是一个给新手学习代码的帖子，包含以下内容：
如何使用UBB代码;
如何用js与剪贴板交互;
如何使用textRange对象;
如何使用自定义的快捷键操作;
如何自动随窗口大小调整页面内容尺寸;
正则表达式的使用等等.
请仔细阅读代码，有问题请提问，目前代码开发完成度80％，IE only
运行代码框
<!DOCTYPE HTML PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "standards-compliant mode" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<HTML>
<head>
<meta http-equiv="content-type" content="text/HTML; charset=gb2312" />
<title>Blue Idea UBB Code Edit</title>
<style>
* {
margin:0px;
padding:0px;
}
HTML, body {
background-color:buttonface;
width:100%;
height:100%;
overflow:hidden;
border-width:0px;
font-size:13px;
font-family:Verdana Arial 宋体;
color:#333333;
cursor:default;
}
input {border-width:1px;}
#divMain {
overflow:hidden;
}
#divTools {
width:100%;
height:20px;
line-height:20px;
overflow:hidden;
border-bottom:1px solid buttonshadow;
margin:0px;
padding:0px;
padding-left:10px;
background-color:buttonface;
color:black;
}
#divTools label { font-weight:bold;float:left;padding-left:15px;padding-right:15px;}
#divTools a {
display:block;
float:left;
height:20px;
padding-left:15px;
padding-right:15px;
line-height:20px;
text-align:center;
overflow:hidden;
color:black;
text-decoration:none;
}
#divTools a:hover {background-color:gold;color:black;}
#divTools a:active {background-color:navy;color:white;}
#divContent, #txtContent {
border:1px inset buttonface;
width:94%;
height:400px;
overflow:auto;
padding:5px;
margin:2px 15px 0px 15px;
background-color:white;
color:black;
display:none;
}
#txtContent {
font-size:14px;
border-width:1px;
display:block;
}
.UBB_code {
border:1px solid #555;
padding:10px;
margin:10px;
width:500px;
background-color:#DDD;
font-size:13px;
font-weight:normal;
color:black;
}
.UBB_HTML {
padding:4px;
width:350px;
height:200px;
font-size:13px;
font-weight:normal;
color:black;
}
.UBB_HTML_button {
width:100px;
height:22px;
line-height:18px;
border-width:2px;
margin:0px;
}
</style>
<script type="text/JavaScript">
var txtContent, divContent, viewButton01, viewButton02, dtf;
var strHTMLStart="<div><textarea class="UBB_HTML">";
var strHTMLEnd="</textarea><input type="button" value="运行代码" onclick="UBB_runCode(this);" class="UBB_HTML_button" /></div>";
var strCodeStart="<div class="UBB_code">";
var strCodeEnd="</div>";
function init(){
txtContent=document.getElementById("txtContent");
divContent=document.getElementById("divContent");
viewButton01=document.getElementById("viewButton01");
viewButton02=document.getElementById("viewButton02");
dtfFrame=document.createElement("iframe");
dtfFrame.frameBorder="0px";
dtfFrame.style.width="0px";
dtfFrame.style.height="0px";
document.body.appendChild(dtfFrame);
dtf=window.frames[window.frames.length-1];
dtf.location.href="about:blank";
window.onresize=switchModel;
txtContent.onkeydown=chkKey;
switchModel(0);
}
function switchModel(id){
// 重新计算输入区域大小
txtContent.style.width=document.body.clientWidth-50+"px";
txtContent.style.height=document.body.clientHeight-50+"px";
divContent.style.width=document.body.clientWidth-50+"px";
divContent.style.height=document.body.clientHeight-50+"px";
if(id==0){ // 转到代码视图
divContent.style.display="none";
txtContent.style.display="block";
viewButton01.style.backgroundColor="navy";
viewButton01.style.color="white";
viewButton02.style.backgroundColor="";
viewButton02.style.color="";
txtContent.focus();
}else if(id==1){ // 转到预览视图
divContent.style.display="block";
txtContent.style.display="none";
divContent.innerHTML=UBB2HTML(txtContent.value);
viewButton02.style.backgroundColor="navy";
viewButton02.style.color="white";
viewButton01.style.backgroundColor="";
viewButton01.style.color="";
divContent.focus();
}
}
function HTML2UBB(strHTML){
var re=HTMLDecode(strHTML);
re=re.replace(/<(/?)strong>/ig,"[{GetProperty(Content)}b]");
re=re.replace(/<(/?)b>/ig,"[{GetProperty(Content)}b]");
re=re.replace(/<(/?)em>/ig,"[{GetProperty(Content)}i]");
re=re.replace(/<(/?)i>/ig,"[{GetProperty(Content)}i]");
re=re.replace(/< *(/?) *div[wW]*?>/ig,"
");
re=re.replace(/< *img +[wW]*?src=["]?([^">
]+)[wW]*?>/ig,"[img]{GetProperty(Content)}[/img]");
re=re.replace(/< *a +[wW]*?href=["]?([^">
]+)[wW]*?>([wW]*?)< */ *a *>/ig,"[url={GetProperty(Content)}]$2[/url]");
re=re.replace(/<script[wW]+?</script>/ig,"");
re=re.replace(/<[wW]*?>/ig,"");
re=re.replace(/(
){2,}/g,"
");
return(re);
}
function UBB2HTML(strUBB){
var re=strUBB;
// 转换HTML实体
re=HTMLEncode(re);
// 屏蔽 HTML 和 code 中的 UBB 转意符
re=re.replace(/([HTML])([wW]*?)([/HTML])/ig,UBB2HTML_escapeUBB);
re=re.replace(/([code])([wW]*?)([/code])/ig,UBB2HTML_escapeUBB);
// 转换UBB代码为HTML代码
re=re.replace(/[b]/ig,"<b>").replace(/[/b]/ig,"</b>");
re=re.replace(/[i]/ig,"<i>").replace(/[/i]/ig,"</i>");
re=re.replace(/[code]/ig,strCodeStart).replace(/[/code]/ig,strCodeEnd);
re=re.replace(/[HTML]/ig,strHTMLStart).replace(/[/HTML]/ig,strHTMLEnd);
re=re.replace(/[size=(d)]/ig,UBB2HTML_fontSize).replace(/[/size]/ig,"</span>");
re=re.replace(/[img]/ig,"<img src="").replace(/[/img]/ig,"" />");
re=re.replace(/[url]([wW]+?)[/url]/ig,"<a href="{GetProperty(Content)}">{GetProperty(Content)}</a>");
re=re.replace(/[url=([^]]+?)]/ig,UBB2HTML_url).replace(/[/url]/ig,"</a>");
// 还原 HTML 和 code 中的 UBB 转意符
re=re.replace(/\[/g,"[").replace(/\]/g,"]");
return(re);
}
function UBB2HTML_escapeUBB(strAll,strS1,strS2,strS3){
switch(strS1.toLowerCase()){
case "[HTML]":
return(strS1+HTMLDecode(strS2.replace(/[/g,"\[").replace(/]/g,"\]"))+strS3);
break;
case "[code]":
return(strS1+strS2.replace(/[/g,"\[").replace(/]/g,"\]")+strS3);
break;
}
}
function HTMLEncode(strS){
return(strS.replace(/&/g,"&").replace(/</g,"<").replace(/>/g,">").replace(/ /g," ").replace(/
/g,"<br/>"));
}
function HTMLDecode(strS){
return(strS.replace(/<br/?>/ig,"
").replace(/
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