我有一个出生日期计算器,它可以很好地计算用户的年龄在年,月和天(23年,11个月,5天)在他们各自的字段中,我想是每当用户在年,月或天字段中输入值时,日期选择器日期应该动态变化。
我试图从date对象中减去Date,但它不起作用。
$(document).ready(function(){
$('#day').keydown(function (event) {
if (event.which === 13) {
var dayval = $("#day").val();
var monthval = $("#month").val();
var yearval = $("#year").val();
var sync = $('#dtpicker').datepicker({
dateFormat: 'dd-mm-yy'
});
var today = new Date();
var substractday = today - dayval
var substractmonth = today - monthval
var substractyear = today - yearval
$("#dtpicker").val(substractday);
$("#dtpicker").val(substractmonth);
$("#dtpicker").val(substractyear);
}
});
});
<link href="https://code.jquery.com/ui/1.12.1/themes/base/jquery-ui.css" rel="stylesheet"/>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://code.jquery.com/ui/1.12.1/jquery-ui.js"></script>
<div>
<div>
<input type="text" name="dob" id="dtpicker">
</div>
<div>
<input type="text" name="year" id="year" placeholder="Enter Your Age in Year">
</div>
<div>
<input type="text" name="month" id="month" placeholder="Enter Your Age in Month">
</div>
<div>
<input type="text" name="day" id="day" placeholder="Enter Your Age in Day">
</div>
</div>
Datepicker date应根据用户的输入自动计算其日期,例如:datepicker中的今天日期是11-08-2019 (dd-mm-yy)如果用户在year字段中输入"1“,则应在datepicker中将日期计算为11-8-2018。
发布于 2019-08-11 14:01:12
您需要像Add year to todays date这样的东西来根据年份的差异计算日期,并需要https://api.jqueryui.com/datepicker/#method-setDate来设置DatePicker值:
var today = new Date();
let birthday = new Date(today.getFullYear() - yearval,
today.getMonth() - monthval,
today.getDate() - dayval);
$("#dtpicker").datepicker("setDate", birthday);
https://stackoverflow.com/questions/57447681
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