用正则表达式格式化html标签的代码

代码如下:

<html>
<head>
</head>
<body>
<style>
#x_edit{
  height:320px;
  width:540px;
  border:1px solid #666666;

color:red;

filter:chroma(color="#0f0f0f");
  background-color:#f0f0f0;
  font-family:verdana;
  font-size:11px;
  line-height:13px;
  margin-left:16px;
  overflow:scroll;
  border-left:none;
  scrollbar-arrow-color:#666666;
  scrollbar-base-color:#666666;
  scrollbar-darkshadow-color:#f0f0f0;
  scrollbar-face-color:#f0f0f0;
  }
</style>
<span onclick="abc()">格式化</span>
<div contentEditable="true" id="x_edit" style='position:relative;line-height:13px;background-color:#f0f0f0;filter:Chroma(color=#FDFEFF);width:540px;height:320px;overflow:auto;white-space: nowrap; z-index: 2;border:0px'>
<P><html><BR><head><BR></head><BR><body><BR><style><BR>#x_edit,#x_edit1{<BR>  height:320px;<BR>  width:540px;<BR>  border:1px solid #666666;</P>
<P>  color:red;</P>
<P>  filter:chroma(color="#0f0f0f");<BR>  background-color:#f0f0f0;<BR>  font-family:verdana;<BR>  font-size:11px;<BR>  line-height:13px;<BR>  margin-left:16px;<BR>  overflow:scroll;<BR>  border-left:none;<BR>  scrollbar-arrow-color:#666666;<BR>  scrollbar-base-color:#666666;<BR>  scrollbar-darkshadow-color:#f0f0f0;<BR>  scrollbar-face-color:#f0f0f0;<BR>  }<BR></style><BR><span onclick="abc()">试试获得selection的top，然后加上div的scrollTop，然后除以行高</span><BR><span id="a" onclick="alert('a')">a</span><BR><span id="b" onclick="alert('b')">b</span><BR><span id="c" onclick="alert('c')"<BR>>c</span><BR><span id="d" onclick="alert('d')">d</span><BR><span id="e" onclick="alert('e')">e</span><BR><span id="f" onclick="alert('f')">f</span<BR>><BR><span id="g"<BR> onclick="alert('g')">g</span><BR><textarea id="x_edit" wrap=off></textarea><BR><div contentEditable="true" id="x_edit1" style='position:relative;line-height:13px;background-color:#f0f0f0;filter:Chroma(color=#FDFEFF);width:540px;height:320px;overflow:auto;white-space: nowrap; z-index: 2;border:0px'></div><BR><script><BR>function abc(){<BR>    //s=x_edit1.innerText;<BR>    var s=x_edit.value;<BR>    s=s.replace(/\n/gi,"");<BR>    //s=s.replace(/<(\w+)(.*?)[^<>]>/gi,"<"+aaa("$1$2")+">");<BR>    s=s.replace(/<(.*?)[^<>]>/gi,"<"+aaa("$1")+">");<BR>    s=s.replace(/\n/gi,"@");<BR>    //var LineValue=x_edit1.innerText.split("\r")<BR>    /*var LineValue=x_edit.value.split("\r")<BR>for(var i=0;i<LineValue.length;i++){<BR>    LineValue[i]=LineValue[i].replace(/(".*")/gi,"$1".replace(/</gi,"\xef").replace(/>/gi,"\xff"))<BR>    LineValue[i]=LineValue[i].replace(/<(.*[^<>])>/gi,"<"+"$1"+">\r")<BR>    LineValue[i]=LineValue[i].replace(/\r\r/gi,"\r")<BR>    LineValue[i]=LineValue[i].replace(/(".*")/gi,"$1".replace(/\xef/gi,"<").replace(/\xff/gi,">"))<BR>}*/<BR>    //x_edit1.innerText=LineValue.join("");<BR>    //x_edit.value=LineValue.join("");<BR>    x_edit.value=s;<BR>    //x_edit1.innerText=s;<BR>}<BR>function aaa(str){<BR>    str=str.replace(/\r/gi," ");<BR>    return str;<BR>}<BR></script><BR></body><BR></html></P>
</div>

<script>
function abc(){
    var s=x_edit.innerText;
    s=s.replace(/<\/?(\w+[\s\S]*?)>/gi,function(a){return a.replace(/[\r\n]/gi,"")});
    x_edit.innerText=s;
}
</script>
</body>
</html>