How to round up decimal value

How to round up decimal value

How to round up the given value.

rate: 1.3599999999999999


should be the result:
= 1.36

code

  1. var sales_interestrate = parseInt($('#sales_interestrate').val());
  2. var sales_terms = $('#sales_terms').val();
  3. $('#sales_interestrate').val((sales_terms * 0.02 )+1);