in modal popup

On your Ajax call, you must be getting the success message from server-side code on Ajax success, based on that close the modal,

if not getting anything from server then modify your server code to return some message.

$ajax({
//other props,
success: function(res)
{
  if(res.Message=="Success")
{
  $("#ModalID").modal('close');
}
}

})

I see that you’re using Bootstrap’s modal component. If you want to prevent the modal from closing when server-side validation fails, you can stop the form submission and show the validation errors in the modal.

Here’s a sample approach:

$("#yourForm").submit(function (e) {
    e.preventDefault(); // Prevent form submission

    // Perform your validation here
    var isValid = ...; // Set this based on your validation

    if (isValid) {
        // If validation passes, submit the form manually
        this.submit();
    } else {
        // If validation fails, show the modal with the error messages
        ShowPopup('Validation Error', 'Your error message here');
    }
});

In this code, replace #yourForm with the id of your form, and replace the ... in var isValid = ...; with your validation logic. The ShowPopup function is used to display the modal with the validation error messages.

For the jQuery issue, you can compare numeric values in text boxes by parsing them as integers first. Here’s a sample code snippet:

$('.check').click(function () {
    var number1 = parseInt($('.number1').val(), 10);
    var number2 = parseInt($('.number2').val(), 10);

    if (number1 === number2) {
        // Do something when the numbers are equal
    } else {
        // Do something when the numbers are not equal
    }
});

In this code, replace .check, .number1, and .number2 with the appropriate selectors for your elements. The parseInt function is used to convert the text box values to integers for comparison.

Remember to replace the class names and variable names with the ones you’re using in your project. If you’re still facing issues, please provide more details or share the relevant parts of your code. 

my popup is this 

For the modal popup issue, you can prevent the modal from closing if there are validation errors. Here’s a general approach:

1. Don’t set an OkControlID or an OnOkScript on the ModalPopupExtender. This will ensure that the ModalPopupExtender doesn’t close automatically when the “OK” button is clicked1.
2. Manually execute the validators and close the ModalPopupExtender once validation is successful2.
3. You could also create a new HiddenField controller from the server-side in ASP that will be used to store the ID of the ModalPopupExtender that you want to show after postback3.

Here’s a sample jQuery code snippet for your reference:

$("#frmSendMessage").submit(function () {
    Recipient = $("input[name='recipient']").val();
    MessageSubject = $("input[name='messageSubject']").val();
    MessageBody = $("input[name='messageBody']").val();

    return false;
});

This code prevents the modal from closing but it doesn’t show any of the errors4.

For the jQuery issue, you can compare numeric values in text boxes by parsing them as integers first. Here’s a sample code snippet:

$('.check').click(function () {
    var number1 = parseInt($('.number1').text());
    var number2 = parseInt($('.number2').text());

    if (number1 === number2) {
        $('.test').css ...
    }
});

This code compares two numbers correctly in jQuery5. Make sure you’re not comparing string representations of numbers, as that could lead to unexpected results.

Remember to replace the class names and variable names with the ones you’re using in your project. If you’re still facing issues, please provide more details or share the relevant parts of your code. 

Thanks