我在asp.net中有一个文本框，我只想输入数字或十进制数据。 不应允许用户输入任何其他数据。 我自己尝试使用以下代码。 但它不允许用户输入十进制数据的小数点。
<script language="JavaScript"> function onlyNumbers(evt) { var e = event || evt; // for trans-browser compatibility var charCode = e.which || e.keyCode; if (charCode > 31 && (charCode < 48 || charCode > 57)) return false; return true; } </script>我修改了下面的代码，以便允许小数点（句点）（代码= 190）
if (charCode != 190) { ((charCode > 31 && (charCode < 48 || charCode > 57))) return false; } return true;但它不起作用（这里我使用190作为定义标准的时期）。 此外，如果有人可以帮我限制此文本框，用户只能输入6个字符。任何人都可以纠正我。 我会非常感激的。
注意：我也试过这个。 它也仅适用于数字，并且还允许输入非数字数据，但如果输入非数字数据则显示错误消息。 但它不是我想要的。 我不希望用户甚至输入非数字数据。
<asp:TextBox ID="txtBasicPay" runat="server" Height="15px" Width="120px"></asp:TextBox> <asp:RegularExpressionValidator ID="RegularExpressionValidator1" ControlToValidate="txtBasicPay" runat="server" ErrorMessage="Only numbers allowed" ValidationExpression="\d+"></asp:RegularExpressionValidator>I have a textbox in asp.net in which I want to enter only either numeric or decimal data. The user should not be allowed to even enter any other data. I have tried it myself using the following code. But it does not allow user to enter decimal point for decimal data.
<script language="JavaScript"> function onlyNumbers(evt) { var e = event || evt; // for trans-browser compatibility var charCode = e.which || e.keyCode; if (charCode > 31 && (charCode < 48 || charCode > 57)) return false; return true; } </script>I had modified the code as below so that it allows the decimal point (period) (code=190)
if (charCode != 190) { ((charCode > 31 && (charCode < 48 || charCode > 57))) return false; } return true;But it doesn't work as well (Here i used 190 for period as defined standard). Moreover If someone can help me limit this textbox for user to enter only 6 characters.Can anyone please correct me. I will be really thankful.
Note: I had also tried this. It also works only for numbers and also allows entering of non-numeric data but displays an error message if non-numeric data is entered. But its not what I want. I don't want user to even enter non-numeric data.
<asp:TextBox ID="txtBasicPay" runat="server" Height="15px" Width="120px"></asp:TextBox> <asp:RegularExpressionValidator ID="RegularExpressionValidator1" ControlToValidate="txtBasicPay" runat="server" ErrorMessage="Only numbers allowed" ValidationExpression="\d+"></asp:RegularExpressionValidator>最满意答案
您可以使用以下作为
在ASPX中：
<asp:TextBox ID="txtBasicPay" runat="server" Height="15px" Width="120px" onkeypress="return isFloatNumber(this,event);"></asp:TextBox>使用Javascript：
function isFloatNumber(e, t) { var n; var r; if (navigator.appName == "Microsoft Internet Explorer" || navigator.appName == "Netscape") { n = t.keyCode; r = 1; if (navigator.appName == "Netscape") { n = t.charCode; r = 0 } } else { n = t.charCode; r = 0 } if (r == 1) { if (!(n >= 48 && n <= 57 || n == 46)) { t.returnValue = false } } else { if (!(n >= 48 && n <= 57 || n == 0 || n == 46)) { t.preventDefault() } } }You can use following as
In ASPX:
<asp:TextBox ID="txtBasicPay" runat="server" Height="15px" Width="120px" onkeypress="return isFloatNumber(this,event);"></asp:TextBox>Javascript:
function isFloatNumber(e, t) { var n; var r; if (navigator.appName == "Microsoft Internet Explorer" || navigator.appName == "Netscape") { n = t.keyCode; r = 1; if (navigator.appName == "Netscape") { n = t.charCode; r = 0 } } else { n = t.charCode; r = 0 } if (r == 1) { if (!(n >= 48 && n <= 57 || n == 46)) { t.returnValue = false } } else { if (!(n >= 48 && n <= 57 || n == 0 || n == 46)) { t.preventDefault() } } }更多推荐
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