$('#submit_button_id').on('click', function(e)
{
var payers_account = $("input[name='payers_account']").val();
$.post('ajax.php',
{
payment_amount: payment_amount,
payers_account: payers_account,
}, function(data)
{
if (data === 'invalid')
{
$(".account_invalid_message").html("<p>Given Account Number is invalid</p>");
}
else if (data === 'valid')
{
$("#account_validation_form").submit();
}
});
});
use this code and do a little change on HTML change the type="submit" to type="button" for your submit button