Make textbox mandatory if visible(textbox is visible based on radio button selection yes/no)

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I have radio button list and on selection of Yes/No ,I need to hide/show textbox.
If yes is selected, then textbox is visible and If No then hidden.
If textbox is visible then I need to make it mandatory using Jquery.

What I have tried:

If radiobtn.selected checked
Then textbox is mandatory.

Posted 9-Jul-16 18:51pm

Member 10926063

Updated 10-Jul-16 20:54pm

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Karthik_Mahalingam · Answer 1 · 2016-07-10T20:54:00

try this

<html>
<head>

    <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>

    <script>
        function check() {
            var value = $('input[name=opt]:checked').val();
            if (value == 'Yes')
                $('#txtbox').show();
            else
                $('#txtbox').hide();

            if (value == 'Yes' && $('#txtbox').val() == '') {
                alert('Please enter the mandatory field');
                return false;
            }
            else {
                alert('submit!!');
                return true;
            }

        }

        $(document).ready(function () {
            $('input[name=opt]').change(function () {
                if (this.value == 'Yes') {
                    $('#txtbox').show();
                }
                else {
                    $('#txtbox').hide();
                }
            });
        });
    </script>


</head>
<body>

    <input type="radio" name="opt" checked value="Yes"> Yes<br>
    <input type="radio" name="opt" value="No"> No<br>
    <input type="text" id="txtbox" />
    <button onclick="check()">submit</button>


</body>
</html>

Lino Mendoza · Answer 2 · 2016-07-09T19:18:00

Solution 1

C#

you can use $("p").hide(); and $("p").show();

$('#element').click(function() {
   if($('#radio_button').is(':checked')) { 
     $("#texboxid").show();
   }else{
     $("#texboxid").hide();
   }
});

Posted 9-Jul-16 19:18pm

Lino Mendoza

Comments

Member 10926063 10-Jul-16 7:16am

I m doing same,but I need to make textbox mandatory/required if it is visible when form is submitted.