datetimepicker erasing value from input if value exists at page load

问题

I'm using this datetime picker for Bootstrap 4 https://tempusdominus.github.io/bootstrap-4/

The plugin works just fine if the input is blank at load. However, I have an Edit form that has already a value but the datepicker is removing the value at page load.

<div class="container">
    <div class="row">
        <div class='col-sm-6'>
            <div class="form-group">
               <input class="form-control datetimepicker-input" data-target="#Entry_EntryDate" data-toggle="datetimepicker" data-val="true" data-val-date="The field Event Date must be a date." data-val-required="The Event Date field is required." id="Entry_EntryDate"  type="datetime" value="2017-10-25 10:17 AM" />
            </div>
        </div>
    </div>
</div>

and default js

 $(function() {
         $('#Entry_EntryDate').datetimepicker();
 });

Here is the JsFiddle

I forked the recommended jsfiddle so I'm sure I have all the correct needed dependencies.

I tried changing locales, changing formats but no luck.

回答1:

When you are initializing datetimepicker it is clearing the value by default, so in order to keep the value, you will need to remember the value $('#Entry_EntryDate').val() convert it to date object and pass it to timepicker on initialization:

and default js

 $(function() {
     var date = moment($('#Entry_EntryDate').val(), 'YYYY-MM-DD hh:mm a').toDate();
     $('#Entry_EntryDate').datetimepicker({date:date});
 });

来源：https://stackoverflow.com/questions/46940928/datetimepicker-erasing-value-from-input-if-value-exists-at-page-load