字符转义

// 字符转义
    function StringValFilter(str) {
        var s = "";
        if (str.length === 0) {
            return "";
        }
        s = str.replace(/&/g, "&");
        s = s.replace(/&lt;/g, "<");
        s = s.replace(/&gt;/g, ">");
        s = s.replace(/&nbsp;/g, " ");
        s = s.replace(/&#39;/g, "\'");
        s = s.replace(/&quot;/g, "\"");
        return s;
    }

移除HTML标签代码

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;
    }