.NET客户端的数据验证实例

ASP.NET代码块

<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代码块

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

function checkForm() {

if (document.form1.TextBox1.value == "") {

alert("怎么是空的!");

document.form1.TextBox1.focus();

return false;

}

var length = document.form1.TextBox1.value.length;

if (length < 6 || length > 10) {

alert("必须是6~10个字符内！");

return false;

}

}

</script>