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C# 使用js正则表达式，让文本框只能输入数字和字母，最大长度5位

2024-07-07 15:55:16   223人阅读

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使用js正则表达式，让文本框只能输入数字和字母，最大长度5位，只需要加个onkeyup事件，即可简单实现

<asp:TextBox ID="txtBegin" runat="server" size="5" maxlength="5" onkeyup="value=http://www.mamicode.com/value.replace(/[^/a-/z/A-/Z0-9]/g,‘‘)"></asp:TextBox>

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