actually this code is working well in firefox mozilla but it's not working in IE8
<asp:Button ID="btnSubmit" runat="server" Text="Submit" CssClass="btnPrimary" OnClientClick="return doSubmit('this');"
OnClick="btnSubmit_Click" />
<script type="text/javascript">
function doSubmit()
{
var ansLength = oDOM.body.innerText.trim().length;
if (ansLength == 0 && smielyPresent == -1)
{
alert("you cannot submit blank answer");
return false;
}
}
</script>
protected void btnSubmit_Click(object sender, EventArgs e)
{
// i am doing some stuff
}
here i want to prevent postback when answerlength == 0 ;
but when answer length ==0
then it alert alert("u can't submit blank answer")
message and postback to server io want to prevent it how i do ?
It's not working since you have a script error in your javascript.
<script type="text/javascript">
function doSubmit()
{
//I've removed the first equal sign
var ansLength = oDOM.body.innerText.trim().length;
if (ansLength == 0 && smielyPresent == -1) //typo on smielyPresent ?
{
alert("u can't submit blank answer")
return false;
}
}
</script>
试试这个
OnClientClick="doSubmit(this); return false;"
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