.NET客戶端的數據驗證實例

ASP.Net代碼塊

<form id="form1" runat="server">
    <asp:TextBox ID="TextBox1" runat="server"></ASP:TextBox>
    <ASP:Button ID="Button7" runat="server" OnClick="Button7_Click" OnClIEntClick="Javascript:return checkForm()"  Text="提交" />
</form>

JavaScript代碼塊

<script language="Javascript" type="text/Javascript">

        function checkForm() {
            if (document.form1.TextBox1.value == "") {
                alert("怎麼是空的!");
                document.form1.TextBox1.focus();
                return false;
            }
            var length = document.form1.TextBox1.value.length;
            if (length < 6 || length > 10) {
                alert("必須是6~10個字符內！");
                return false;
            }
        }
    
    </script>