jquery用户输入大写不适用于某些情况

Question

我使用Jquery实时覆盖用户对大写字母的输入。但是我收到的一些数据大概不是2％左右。我可以知道可能导致这种情况吗？

//convert all lower case to upper case
$("input, textarea").not("[data-controlname='txtCompanyEmailAddress'] input," +
                    "[data-controlname='KeyAccEmailaddress'] input," +
                    "[data-controlname='AccDeptEmailaddress'] input," +
                    "[data-controlname='CompanyEmail'] input," +
                    "[data-controlname='CompanyURL'] input," +
                    "[data-controlname='txtInternalComment'] textarea," +
                    "[data-controlname='txtRejectCommentToSupplier'] textarea"
                    ).on('input', function(evt) {
          var input = $(this);
          var start = input[0].selectionStart;
          $(this).val(function (_, val) {


            return val.toUpperCase();
          });
          input[0].selectionStart = input[0].selectionEnd = start;
 });