Question

I have a requirement that is when user entering text in the textbox i want to show a message (not alert box, this is asp: lable) i.e if user enter “x” in the textbox then i want show a message not after completion of text and not like ontextchanged event. If user cleans textbox then i don’t want to show message.

Answer 1

You may try something like this:

Your textbox:

<asp:TextBox ID="TextBox1" runat="server" onKeyUp="my_function(this);"></asp:TextBox>

where your function my_function() is defined as follows:

<script type="text/javascript">
    function my_function(el) {
        var val = this.value;
        if(val && val!="") {
            // Hide your message
            // ....

        } else {
            // Show your message
            // ....

        }
    }
</script>

Hope this helps