Enter 10% and 20% for the two TextBoxes, and subtract 1 from them. The result is automatically displayed in the Label. .

48227501

Enter 10% and 20% of the two TextBoxes, and subtract 1 from them. The result is automatically displayed in the Label.
Please help me look at what method, thank you

grass0423

TextBox tb1 = new TextBox ();
        TextBox tb2 = new TextBox ();
        Label l1 = new Label ();
        tb2.Attributes.Add ("onblur", "document.all ['l1']. value = 1-document.all ['tb1']-document.all ['tb2']");

苹果小刀

Is it ok to convert to numbers and then subtract?

48227501

How to trigger an event, if written in a script, how to write it

摩羯可乐

<script type="text/javascript">
function a()
{
   var a=document.getElementById('TextBox1').value;
   alert(a);
   var b=document.getElementById('TextBox2').value;
   alert(b);
   var c=1-a-b;
   alert(c);
   document.getElementById('Label1').innerHTML=c;
   
}

</script>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <asp:TextBox ID="TextBox1" runat="server" Style="z-index: 100; left: 105px; position: absolute;
            top: 112px"></asp:TextBox>
        <asp:TextBox ID="TextBox2" runat="server" Style="z-index: 101; left: 104px; position: absolute;
            top: 157px" onblur="a()"></asp:TextBox>
        <asp:Label ID="Label1" runat="server" Style="z-index: 103; left: 107px; position: absolute;
            top: 192px" Text="" ></asp:Label>
   
    </div>
    </form>
</body>