如何为jQuery DCalendar插件设置初始选中日期

Hey there! I've worked with this exact calendar plugin before, so let's get your pre-filled date automatically selected on page load. Here's the straightforward fix:

Solution 1: Pass the Default Date During Initialization #

The simplest way is to initialize the calendar while specifying your pre-existing date as the default selected value. Since your pageDate is already in the plugin's expected mm/dd/yyyy format, this will work seamlessly:

$(document).ready(function() {
  var pageDate = "4/04/2018";
  // Set the input value AND initialize the calendar with the target date
  $('.date').val(pageDate).dcalendar({
    date: pageDate // This tells the plugin to select this date on load
  });
});

Solution 2: Update Selection If Calendar Is Already Initialized #

If your calendar is initialized elsewhere in your code (before setting the input value), you can manually trigger the selection after setting the input's value:

$(document).ready(function() {
  var pageDate = "4/04/2018";
  var $dateInput = $('.date');
  
  // Set the input value first
  $dateInput.val(pageDate);
  
  // Initialize the calendar if it hasn't been already
  if (!$dateInput.data('dcalendar')) {
    $dateInput.dcalendar();
  }
  
  // Get the calendar instance and select the target date
  var calendarInstance = $dateInput.data('dcalendar');
  var targetDate = new Date(pageDate);
  calendarInstance.selectDate(targetDate);
});

Key Notes: #

• Make sure your date format (mm/dd/yyyy) matches the plugin's default format. If you're using a different format, add the format option to the dcalendar() initialization (e.g., format: 'dd/mm/yyyy').
• Always wrap your code in $(document).ready() to ensure the DOM is fully loaded before manipulating elements or initializing plugins.

内容的提问来源于stack exchange，提问作者Will