[英]JavaScript function for matching regular expression
我在ASP.net AA000000
上有一个文本框,期望值的格式为AA000000
。 我正在使用自定义验证器来调用Javascript函数以使用正则表达式验证文本。 但这还行不通。 请指教。
<asp:TextBox ID="txtPassportNumber" runat="server" Visible="True" Width="576px" AutoPostBack="True" ControlToValidate="txtIdentityNumber"></asp:TextBox>
<asp:RequiredFieldValidator ID="valRequiredPassportNumber" runat="server" ErrorMessage="Passport number is required." ControlToValidate="txtPassportNumber" ValidateRequestMode="Enabled" Font-Italic="True" ForeColor="Red" SetFocusOnError="True"></asp:RequiredFieldValidator>
<asp:CustomValidator ID="valCustomPassportNumber" runat="server" ErrorMessage="Please provide a valid Passport number." ControlToValidate="txtPassportNumber" ClientValidationFunction="validatePassportNumber" Font-Italic="True" ForeColor="Red" SetFocusOnError="True"></asp:CustomValidator>
JS
< script > function validatePassportNumber(oSrc, args) { if (document.getElementById("txtPassportNumber").value != "") { var inputString = document.getElementById("txtPassportNumber").value; //var pattern = new RegExp("/[a-zA-Z]{2}[0-9]{6}/"); var pattern = /[a-zA-Z]{2}[0-9]{6}/; if (pattern.test(inputString) == true) args.IsValid = true else args.IsValid = false } } <script >
使用它: ^[a-zA-Z]{2}\\d{6}$
在javascript中: /^[a-zA-Z]{2}\\d{6}$/gm
^ : First of line
[a-zA-Z]{2} : any character with length 2
\d{6} : any digit(number) with length 6
$ : End of line
您可以使用此正则表达式:
var pattern = /^[A-Z]{2}[0-9]{6}$/;
那会匹配
^ # The beginning of the string [A-Z]{2} # 2 Uppercase characters [0-9]{6} # 6 digits $ # The end of the string
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