我为一个服务器控件Button做了脚本可是我想实现通过脚本之后才能回传到服务器,没通过脚本验证就不用回发到服务器了,各位大师们,有什么办法可以实习。我的脚本是
function Checkpwd()
{
var txtTitle=document.getElementById('<%=TextBox1.ClientID%>');
var txtTitle1=document.getElementById('<%=TextBox2.ClientID%>');
if(txtTitle.value==''||txtTitle1.value=='' )
{
alert("输入不能为空");
}
if (txtTitle.value.length>0 && (txtTitle.value.length < 6 || txtTitle.value.length > 16))
{
alert("输入长度必须在6个字符到16字符之间")
}}
</script>脚本的意思是判断两个文本框的内容为空了出现提示,小于6个字符大于16个字符也出现提示。我就是想通过这2个验证就回传服务器,要不然就不回传服务器了
function Checkpwd()
{
var txtTitle=document.getElementById('<%=TextBox1.ClientID%>');
var txtTitle1=document.getElementById('<%=TextBox2.ClientID%>');
if(txtTitle.value==''||txtTitle1.value=='' )
{
alert("输入不能为空");
}
if (txtTitle.value.length>0 && (txtTitle.value.length < 6 || txtTitle.value.length > 16))
{
alert("输入长度必须在6个字符到16字符之间")
}}
</script>脚本的意思是判断两个文本框的内容为空了出现提示,小于6个字符大于16个字符也出现提示。我就是想通过这2个验证就回传服务器,要不然就不回传服务器了
var flag = true;
var txtTitle = document.getElementById('<%=TextBox1.ClientID%>');
var txtTitle1 = document.getElementById('<%=TextBox2.ClientID%>');
if (txtTitle.value == '' || txtTitle1.value == '') {
flag = false;
alert("输入不能为空"); }
if (txtTitle.value.length > 0 && (txtTitle.value.length < 6 || txtTitle.value.length > 16)) {
flag = false;
alert("输入长度必须在6个字符到16字符之间"); }
return flag; }然后button
<asp:Button runat="server" ID="a" Text="hello world" OnClientClick="return Checkpwd();"/>
return false;
alert("输入不能为空"); }
这么说可以这样????????????
大哥我知道了,这样可以
if (txtTitle.value == '' || txtTitle1.value == '')
{ alert("输入不能为空");
return false;
}刚才那个就弹不出提示框了