如果未选择日期，如何防止 bootstrap-datepicker 从输入中清除现有值?

2022-01-05 00:00:00 php javascript twitter-bootstrap datepicker bootstrap-datepicker

我有一个用 php 预填充用户出生日期的 div:

<label for="dob">出生日期</label><input type="text" class="form-control" id="dob" name="dob" value="<?php $date = new DateTime($this->swimmers->dob);echo $date->format('d/m/Y');?>"><span class="input-group-addon"><i class="glyphicon glyphicon-th"></i></span>

javascript:

Bootstrap 已设置并正常工作，但是，当dob"输入在没有进行日期选择的情况下获得和失去焦点时，它会清除预先填充的值.

但是，如果通过日期选择器选择了日期，然后输入获得和失去焦点，则不会发生这种情况.

如果有人点击，如何将预先填充的值保留在字段中?

第一次选择日期时，它会清除预先填充的值，但在您第二次选择日期之前不会插入所选日期.

更新:工作代码更新！

解决方案

没有更多的例子无法确定，但问题可能在于 $this->swimmers->dob 您提供给输入的字符串未被 bootstrap-datepicker 识别为日期格式.您可以通过将 data-date-format 属性添加到您的输入来定义它使用的日期格式.

例如，如果您使用的是 MySQL 格式的日期或 PHP 的 DateTime 对象和 $date->format('Y-m-d')，您可以使用:

<input type="text" class="form-control" id="dob" name="dob" value="<?php echo $this->swimmers->dob;?>"data-date-format="yy-mm-dd"><span class="input-group-addon"><i class="glyphicon glyphicon-th"></i></跨度>

I have have a div with a user's date of birth pre-populated with php:

<div id="datepicker" class="input-group date">
    <label for="dob">Date of Birth</label> <input type="text" class="form-control" id="dob" name="dob" value="<?php $date = new DateTime($this->swimmers->dob); echo $date->format('d/m/Y');?>"><span class="input-group-addon"><i class="glyphicon glyphicon-th"></i></span>
</div>

The javascript:

<script>     
    $('.container .input-group.date').datepicker({
    startDate: "01/01/1900",
    endDate: "01/01/2100",
    format: "dd/mm/yyyy",
    autoclose: true,
    todayHighlight: true
    });
</script>

Bootstrap is setup and working correctly however, when the "dob" input gets and loses focus without making a date selection it clears the value that was pre-populated.

This however doesn't happen if a date has been selected via the datepicker and then the input gets and loses focus.

How can the pre-populated value be kept in the field if someone clicks in it?

Edit: The first time you make a date selection, it clears the pre-populated value but doesn't insert the selected date until you make a date selection a second time.

Update: Working code updated!

解决方案

Can't tell for sure without more of an example but the problem is probably that the $this->swimmers->dob string you are giving to the input is not recognised as a date format by bootstrap-datepicker. You can define the date format it uses by adding the data-date-format attribute to your input.

For example if you were using a MySQL formatted date or PHP's DateTime object with $date->format('Y-m-d') you could use:

<div id="datepicker" class="input-group date">
    <input type="text" class="form-control" id="dob" name="dob" value="<?php echo $this->swimmers->dob;?>" data-date-format="yy-mm-dd"><span class="input-group-addon"><i class="glyphicon glyphicon-th"></i></span>
</div>

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