jquery ui datepicker take value 1970 if input field is blank

问题

i am using jquery ui date picker for take fromDate and toDate

Following is the code of from date

 <input name="from_date" id="from_date" maxlength="20" size="20" type="text"/>  

   $("#from_date").datepicker({
            dateFormat: 'M dd, yy',
            showButtonPanel: true,
            changeMonth: true,
            changeYear: true,
            defaultDate: null
        });   

now i use the form to take the value in POST varible using PHP
If the fromDate field is blank then it take value '1970-01-01' i want it blank

回答1:

Change your PHP function is use empty instead of null

function showDate($date,$format='m-d-y, h:i a') {
   if(empty($date)) return ' ';
   return date($format,strtotime($date)); 
}

回答2:

try to set defaultDate: '' or remove it at all

回答3:

As you can find in jquery ui documentation (here), if you don't precise defaultDate option, default date is current date.

来源：https://stackoverflow.com/questions/7978787/jquery-ui-datepicker-take-value-1970-if-input-field-is-blank