截取字符串的问题

Question

现在我要截取字符串 
<font   color= "red "> 这里是内容 </font>
怎么才能去只截取内容 而不截取格式呢 
就算不保留格式也行

Answer 1

后台写个截取方法 public string getSubString(string title, int strlength)
        {
            if (stringToSub == null || stringToSub.Length == 0 || length <= 0) return "";
            Regex regex = new Regex("[\u4e00-\u9fa5]+", RegexOptions.Compiled);
            char[] stringChar = stringToSub.ToCharArray();
            StringBuilder sb = new StringBuilder();
            int nLength = 0;
            bool isCut = false;
            for (int i = 0; i < stringChar.Length; i++)
            {
                if (regex.IsMatch((stringChar[i]).ToString()))
                {
                    sb.Append(stringChar[i]);
                    nLength += 2;
                }
                else
                {
                    sb.Append(stringChar[i]);
                    nLength = nLength + 1;
                }                if (nLength > length)
                {
                    isCut = true;
                    break;
                }
            }
            if (isCut)
                return sb.ToString() + "...";
            else
                return sb.ToString();
        }这是我的方法，可能实际开发中LZ不需要写这么复杂，直接判断长度，如果长度超出截取就可以了<%#getSubString("这里是内容",40)%>

Answer 2

用js弄就很简单了！
<div id="aa"><font color= "red "> 这里是内容 </font></div>document.getElementById("aa").innerText

Answer 3

<font color= "red "> 这里是内容 </font>开始截取的位置是第一次发现“>”，结束位置是第二次发现“<”

Answer 4

<div id="aa"><font color= "red "> 这里是内容 </font></div>document.getElementById("aa").innerText
up

Answer 5

很简单。用jquery一句话.<font color= "red "> 这里是内容 </font>
<script src="App_common/scripts/jquery-1.4.2.min.js" type="text/javascript"></script>
    <script type="text/javascript">
        $(function(){
            $("font[color='red']").val();//输出结果:这里是内容
        });
    </script>

Answer 6

我这些字符串是放在datalist里面的
还有就是我想在后台截取

Answer 7

先去标签 再截str = Regex.Replace(str, @"<[^<>]*>", "");
str = str.SubString(...);

Answer 8

<input id="hidvar" type="hidd***" ruant="server">
var  Varfont=$("font[color=red]").val();
$("#hidvar").val(Varfont);
后台:string ss=this.hidvar.value;

Answer 9

public string getSubString(string title, int strlength)
        {
            if (stringToSub == null || stringToSub.Length == 0 || length <= 0) return "";
            Regex regex = new Regex("[\u4e00-\u9fa5]+", RegexOptions.Compiled);
            char[] stringChar = stringToSub.ToCharArray();
            StringBuilder sb = new StringBuilder();
            int nLength = 0;
            bool isCut = false;
            for (int i = 0; i < stringChar.Length; i++)
            {
                if (regex.IsMatch((stringChar[i]).ToString()))
                {
                    sb.Append(stringChar[i]);
                    nLength += 2;
                }
                else
                {
                    sb.Append(stringChar[i]);
                    nLength = nLength + 1;
                }

Answer 10

屏蔽 html标签 调用一下就好了 祝你好运！ public static string NoHTML(string Htmlstring)
    {
        string strOutput = Htmlstring;        strOutput = Regex.Replace(strOutput, @"<script[^>]*?>.*?</script>", "", RegexOptions.IgnoreCase);
        // strOutput = Regex.Replace(strOutput,@"<(\/\s*)?!?((\w+:)?\w+)(\w+(\s*=?\s*(([""'])(\\[""'tbnr]|[^\7])*?\7|\w+)|.{0})|\s)*?(\/\s*)?>","",RegexOptions.IgnoreCase);//在个别情况下会引起IIS吃爆CPU的现象
        strOutput = Regex.Replace(strOutput, @"<(.[^>]*)>", "", RegexOptions.IgnoreCase);
        strOutput = Regex.Replace(strOutput, @"([\r\n])[\s]+", "", RegexOptions.IgnoreCase);
        strOutput = Regex.Replace(strOutput, @"-->", "", RegexOptions.IgnoreCase);
        strOutput = Regex.Replace(strOutput, @"<!--.*", "", RegexOptions.IgnoreCase);
        strOutput = Regex.Replace(strOutput, @"&(quot|#34);", "\"", RegexOptions.IgnoreCase);
        strOutput = Regex.Replace(strOutput, @"&(amp|#38);", "&", RegexOptions.IgnoreCase);
        strOutput = Regex.Replace(strOutput, @"&(lt|#60);", "<", RegexOptions.IgnoreCase);
        strOutput = Regex.Replace(strOutput, @"&(gt|#62);", ">", RegexOptions.IgnoreCase);
        strOutput = Regex.Replace(strOutput, @"&(nbsp|#160);", " ", RegexOptions.IgnoreCase);
        strOutput = Regex.Replace(strOutput, @"&(iexcl|#161);", "\xa1", RegexOptions.IgnoreCase);
        strOutput = Regex.Replace(strOutput, @"&(cent|#162);", "\xa2", RegexOptions.IgnoreCase);
        strOutput = Regex.Replace(strOutput, @"&(pound|#163);", "\xa3", RegexOptions.IgnoreCase);
        strOutput = Regex.Replace(strOutput, @"&(copy|#169);", "\xa9", RegexOptions.IgnoreCase);
        strOutput = Regex.Replace(strOutput, @"&#(\d+);", "", RegexOptions.IgnoreCase);
        strOutput.Replace("<", "");
        strOutput.Replace(">", "");
        strOutput.Replace("\r\n", "");
        strOutput = HttpContext.Current.Server.HtmlEncode(strOutput).Trim();
        strOutput=strOutput.Replace(" ", "");
        return strOutput;
    }