Javascript 清除文本框、文本域中的 HTML 代码
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<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="JSRemoveHTML.aspx.cs" Inherits="WebUI.JSRemoveHTML" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head runat="server"> <title></title> <script language="JavaScript" type="text/JavaScript"> function RemoveHTML() { var strText = document.getElementById("txtAskTitle").value; var regEx = /<[^>]*>/g; document.getElementById("txtAskTitle").value = strText.replace(regEx, ""); } ///移除HTML代码， function RemoveHTML2(obj, event) { var argumentsLength = arguments.length; if (argumentsLength == 2) { //KeyUp if (event.keyCode == 37 || event.keyCode == 38 || event.keyCode == 39 || event.keyCode == 40) { return; } if (window.event.ctrlKey && event.keyCode == 65) { return; } } var tempValue = obj.value.replace(/<\/?[^>]+>/g, ""); //去除HTML tag tempValue = tempValue.replace(/[ | ]*\n/g, "\n"); //去除行尾空白 tempValue = tempValue.replace(/\n[\s| | ]*\r/g, "\n"); //去除多余空行 if (obj.value != tempValue) { obj.value = tempValue; } document.getElementById("divShow").innerHTML = obj.value; } </script> </head> <body> <form id="form1" runat="server"> <div> SessionID：<asp:Literal ID="ltSessionId" runat="server"></asp:Literal> </div> <div> &</div> <div> <textarea rows="20" cols="50" id="txtAskTitle" name="txtAskTitle" onkeyup="RemoveHTML2(this,event)" onblur="RemoveHTML2(this)"></textarea> <input type="button" value="去掉HTML" onclick="RemoveHTML();" /> <asp:Button ID="btnSubmit" runat="server" Text="提交" OnClick="btnSubmit_Click" /> <div id="divShow"> <asp:Literal ID="ltShow" runat="server" Text=""></asp:Literal> </div> </div> </form> </body> </html>
