javascript限制文本只能数字
记录下只能输入数字javascript脚本
<script>
function onlyNum() {
if (!((event.keyCode >= 48 && event.keyCode <= 57) || (event.keyCode >= 96 && event.keyCode <= 105) ||
event.keyCode == 8))
event.returnValue = false;
}
</script>
详细调用Demo如下：
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<!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">
<script>
function onlyNum() {
if (!((event.keyCode >= 48 && event.keyCode <= 57) || (event.keyCode >= 96 && event.keyCode <= 105) || event.keyCode == 8))
event.returnValue = false;
}
</script>
<title>只能输入数字Demo</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:TextBox ID="txtCD" runat="server" Width="100" onkeydown="onlyNum()" MaxLength="8" ></asp:TextBox>*只能输入数字
</div>
</form>
</body>
</html>
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