使用 Bootstsrap Jquery 在 datepicker 中将下个月和上个月替换为下个月和前一天

Question

我有一个 jquery 引导 datepicker 内联，我想增加和减少当天我尝试这个：

// Html Code
<div id="datepicker"></div> 

// JS Code
$('#datepicker').datepicker({
    todayHighlight: true,
    language: 'en', 
 });
$('.btn-next').on("click", function () {
    var currentDate = $('#datepicker').datepicker('getDate');
    var selectedDate= new Date(currentDate);
    // Increase current day by +1
    selectedDate.setDate(selectedDate.getDate() + 1);
    $('#datepicker').datepicker('update',selectedDate);
});

$('.btn-prev').on("click", function () {
    var currentDate = $('#datepicker').datepicker('getDate');
    var selectedDate= new Date(currentDate);
    // Decrease current day by -1
    selectedDate.setDate(selectedDate.getDate() - 1);
    $('#datepicker').datepicker('update',selectedDate);
});

但它不再起作用了，这个运营商的任何想法

Answer 1

您不需要再次转换从 datepicker 获得的日期，只需+1或-1即可，并在 datepicker 中添加新值。

演示代码：

 $('#datepicker').datepicker({ todayHighlight: true, language: 'en', }); $('.btn-next').on("click", function() { var currentDate = $('#datepicker').datepicker('getDate'); currentDate.setDate(currentDate.getDate() + 1); $('#datepicker').datepicker('update', currentDate); }); $('.btn-prev').on("click", function() { var currentDate = $('#datepicker').datepicker('getDate'); currentDate.setDate(currentDate.getDate() - 1); $('#datepicker').datepicker('update', currentDate); });

 <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-datepicker/1.9.0/js/bootstrap-datepicker.min.js" integrity="sha256-bqVeqGdJ7h/lYPq6xrPv/YGzMEb6dNxlfiTUHSgRCp8=" crossorigin="anonymous"></script> <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous"> <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js" integrity="sha384-ApNbgh9B+Y1QKtv3Rn7W3mgPxhU9K/ScQsAP7hUibX39j7fakFPskvXusvfa0b4Q" crossorigin="anonymous"></script> <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js" integrity="sha384-JZR6Spejh4U02d8jOt6vLEHfe/JQGiRRSQQxSfFWpi1MquVdAyjUar5+76PVCmYl" crossorigin="anonymous"></script> <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-datepicker/1.9.0/css/bootstrap-datepicker.min.css" integrity="sha256-siyOpF/pBWUPgIcQi17TLBkjvNgNQArcmwJB8YvkAgg=" crossorigin="anonymous" /> <input type="text" id="datepicker"> <button class="btn-prev">Prev</button> <button class="btn-next">Next</button>