正则表达式过滤html

 function ClearHTML(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(/&nbsp;/g, "") ; //去除空格
    return str;
    }