document.ready with change event或一个被调用onChange的函数。哪一个更好的方式，为什么？

Question

我是编程的新手，我想知道下面写的两种方式，哪一种更好/更好的方法，为什么？

代码是在指定日期添加给定天数，并在单选按钮列表中选择天数时在输入框中插入新日期

HTML 的

 for(ParseObject singleClaim : resultsList){
        //If the customerStatus is 5, we check to see if the updatedTime            is within 24 Hours.                 
    if(singleClaim.getInt("customerStatus") == 5) {
        //Create a date formatter.
        SimpleDateFormat formatter=new SimpleDateFormat("yyyy-MM-dd'T'HH':'mm':'ss'.'SSS'Z'");
        //Create a date object for today's date.
        Date currentDate=new Date();
        //Create a string for the date from parse.
        String parseTime = singleClaim.getString("updatedAt");            
        //Initialize the date object for the updatedAt time on Parse.
        Date parseDate = null;
        try {
        //Here, we convert the parseTime string into a date object and format it.
            parseDate = formatter.parse(parseTime);
        } 
        catch (Exception e) {
            e.printStackTrace();
        }           
        //Get the time difference from the current date versus the date on Parse in milliseconds.
        long difference = currentDate.getTime() - parseDate.getTime();


        for(int i=1;;i++ ){
        //If the time difference is more than 24 hours in milliseconds, we print out the claim number.
        if(difference>86400000){                    
        System.out.println(i + ".)" + singleClaim.getString("claimNumber"));
            }     
        else {       
        break;};
        }
        }}
        System.out.println("\n////////////////////////////////////////////////////////");
        System.out.println("Done getting claims with customerStatus of 5 updated over 24 hours ago.");
        System.out.println("///////////////////////////////////////////////////////\n");
        }
        catch(Exception e){
        e.printStackTrace();
        }}}

jQuery（第一个）

Old Date (MM/DD/YYYY) : <input type="text" id="date1" /><br><br>
<input type="radio" name="expiry" id="allot" value="5" onchange="dateChange()">5 Days
<input type="radio" name="expiry" id="allot" value="10" onchange="dateChange()" >10 Days <br> <br>
New Date (MM/DD/YYYY) : <input type="text" id="date2"/><br><br>

jQuery（第二个）

function dateChange(){
  var days = $('input[type=radio][name=expiry]').val();
  var myDate =new Date($("#date1").val());
  myDate.setDate(myDate.getDate()+parseInt(days));
  var inputDate = (myDate.getMonth()+1)+'/'+(myDate.getDate())+'/' (myDate.getFullYear());
  $("#date2").val(inputDate);
}

提前谢谢。