To validate 100% value in textbox using juery focusout event.We can display error message in alert message window
<!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <title></title> <script src="Scripts/jquery-3.1.1.js"></script> <script src="Scripts/jquery.validate.js"></script> </head> <body> <div> <input type="text" id="txtboxId"></div> <script> $('input[id$="txtboxId"]').focusout(functionname); function functionname(sender, args) { var maxKPIPercentage = 100; var totalKPIPercentage = 0; $('input[id$="txtboxId"]').each(function () { if ($.trim($(this).val()).length > 0) { var ctrlVaL = $.trim($(this).val()).replace(/[%,]+/g, ''); totalKPIPercentage = totalKPIPercentage + parseFloat(ctrlVaL); }; }); if (totalKPIPercentage > parseFloat(maxKPIPercentage)) alert("KPI Percentage Exceeded"); event.stopPropagation(); } </script> </body> </html>