I want---if we have enter a value in textbox the button sholud be displayed other wise it disable

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i want---if we have enter a value in textbox the button sholud be displayed other wise it disable

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i want---if we have enter a value in textbox the button sholud be displayed other wise it disable

Posted 20-Mar-17 19:54pm

Member 12165727

Updated 20-Mar-17 20:08pm

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Karthik_Mahalingam · Answer 1 · 2017-03-20T20:06:00

<html xmlns="http://www.w3.org/1999/xhtml">
<head> 
    <script>
        function funblur(txt) {
            var flag = (txt.value == '');
            document.getElementById('<%= btn.ClientID %>').style.display = flag ? 'none' : 'block';
        } 

    </script>
</head>
<body>
    <form id="form1" runat="server">
        
        <asp:TextBox ID="txt" runat="server" onblur="funblur(this)"></asp:TextBox>
        <asp:Button ID="btn" runat="server"   />
    </form>
</body>
</html>

sachin.vishwa90 · Answer 2 · 2017-03-20T20:08:00

There can be multiple solution for it. we have onKeyUp onKeyDown events for textbox. all you have to do is check if textbox is empty. if so then disable the button else enable the button.

<input type="text" id="txtSomeTextbox">
<input type="button" id="txtSomeButton">

$(document).ready(function() {
     $('#txtSomeButton').prop('disabled', true);
     $('#txtSomeTextbox').keyup(function() {
        if($(this).val() != '') {
           $('#txtSomeButton').prop('disabled', false);
        }
     });
 });

I want---if we have enter a value in textbox the button sholud be displayed other wise it disable

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