我在表单中使用了日期范围选择器，如何禁用从MySQL数据库中提取的特定日期范围

<input type="date" id="startDate" name="startDate">
<input type="date" id="endDate" name="endDate">

var startDatePicker = document.getElementById("startDate");
var endDatePicker = document.getElementById("endDate");

startDatePicker.addEventListener("change", validateDateRange);
endDatePicker.addEventListener("change", validateDateRange);

function validateDateRange() {
  var startDate = new Date(startDatePicker.value);
  var endDate = new Date(endDatePicker.value);
  
  // 比较选择的日期范围与特定日期范围
  var specificStartDate = new Date("2022-01-01");
  var specificEndDate = new Date("2022-12-31");
  
  if (startDate >= specificStartDate && endDate <= specificEndDate) {
    // 禁用日期选择器
    startDatePicker.disabled = true;
    endDatePicker.disabled = true;
  } else {
    // 启用日期选择器
    startDatePicker.disabled = false;
    endDatePicker.disabled = false;
  }
}