http://www.cnblogs.com/liszt/archive/2011/08/16/2140007.html
function removeHTMLTag(str){
str = str.replace(/<\/?[^>]*>/g,‘‘); //去除HTML tag
str = str.replace(/[ | ]*\n/g,‘\n‘); //去除行尾空白
//str = str.replace(/\n[\s| | ]*\r/g,‘\n‘); //去除多余空行
str=str.replace(/ /ig,‘‘);//去掉
return str;
}
//Html结构转字符串形式显示 支持<br>换行
function ToHtmlString(htmlStr) {
return toTXT(htmlStr).replace(/\<\;br[\&ensp\;|\&emsp\;]*[\/]?\>\;|\r\n|\n/g, "<br/>");
}
//Html结构转字符串形式显示
function toTXT(str) {
var RexStr = /\<|\>|\"|\‘|\&| | /g
str = str.replace(RexStr,
function (MatchStr) {
switch (MatchStr) {
case "<":
return "<";
break;
case ">":
return ">";
break;
case "\"":
return """;
break;
case "‘":
return "‘";
break;
case "&":
return "&";
break;
case " ":
return " ";
break;
case " ":
return " ";
break;
default:
break;
}
}
)
return str;
}
原文：http://www.cnblogs.com/from/p/4215997.html