javascript - Jquery ajax validate or not? -

i'm using code execute action in controller parameters. , working in validation of inputs.

$('.txt-dtr').on('blur', function () {     // record type know column of table should value saved.     var record = $(this).attr('id');      // record value      var value = $(this).val();      // record date     var row = $(this).closest('tr');     var date = row.attr('id');      // employee id     var empid = $('#semployee').val();      // ajax script saving record     $.ajax({         type: 'post',         url: '/dtr/savedtr',         data: {             record: record,             value: value,             date: date,             empid: empid         }     }); }); 

this code works, onblur , did'nt type in txt-dtr value parameter null , ajax not execute (which want).

the question is, need write validation like

if(value != null){     //execute ajax } 

or leave because without validating ajax not execute?

edit:

my controller not accepting null values ajax not executed if has null parameter value.

public actionresult savedtr(string record, int value, datetime date, int empid) { 

yes needs ajax wont validate. send null value