jQuery ui datepicker,从onSelect获取星期几

// 引入jQuery和jQuery UI库
<script src="https://code.jquery.com/jquery-3.6.0.min.js"></script>
<script src="https://code.jquery.com/ui/1.13.0/jquery-ui.min.js"></script>

// HTML元素，用于显示日期选择器和星期几
<input type="text" id="datepicker">
<div id="result"></div>

// JavaScript代码
$(document).ready(function() {
  // 初始化日期选择器
  $("#datepicker").datepicker({
    onSelect: function(dateText, inst) {
      // 获取选择的日期
      var selectedDate = new Date(dateText);
      
      // 获取星期几
      var weekdays = ["Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"];
      var selectedWeekday = weekdays[selectedDate.getDay()];
      
      // 显示结果
      $("#result").text("Selected date: " + dateText + ", Weekday: " + selectedWeekday);
    }
  });
});