php - 最大日期随日期选择器中的 Mindate 变化

Question

在这里，我选择的最大日期为当前日期后 3 周。但实际上我不想在本周结束之前改变最大日期。我想要这样的东西，当本周再次结束时，最大日期更改为下周末。

jQuery(document).ready(function ($) {
    $("#datepicker").datepicker({
        dateFormat: 'yy-mm-dd',
        showAnim: "slideDown",
        minDate: 0,
        maxDate: "+3w",
        beforeShowDay: $.datepicker.noWeekends
    });
});

Answer 1

通过获取本周剩余的天数来删除上周的多余天数。

var now=new Date();
var startDay = 1; //0=sunday, 1=monday etc.
var d = now.getDay(); //get the current day
var weekStart = new Date(now.valueOf() - (d<=0 ? 7-startDay:d-startDay)*86400000); //rewind to start day
var weekEnd = new Date(weekStart.valueOf() + 6*86400000); 

var maxdate=((weekEnd-now)/86400000-1);
if(d!=0 && d<6)
maxdate = 6-maxdate;
else
maxdate = 0; 

 $("#datepicker").datepicker({
        dateFormat: 'yy-mm-dd',
        showAnim: "slideDown",
        minDate: 0,
        //maxDate: "+3w",
        maxDate: "+3w -"+maxdate+"d",//"+3w -2d",
        beforeShowDay: $.datepicker.noWeekends
    });

<link rel="stylesheet" type="text/css" href="https://cdnjs.cloudflare.com/ajax/libs/jqueryui/1.12.1/jquery-ui.css" media="screen" />
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>

<script src="https://cdnjs.cloudflare.com/ajax/libs/jqueryui/1.12.1/jquery-ui.js"></script>


<input type="text" id="datepicker"/>